The average daily balance is $1,372.57 and the finance charge is $23.69.
What is the formula for the average daily balance?
The formula for the average daily balance is (1/number of days in billing period) x (sum of daily balances)
To calculate the finance charge, we need to first calculate the average daily balance for the billing period.
So, in this case, the billing period is 31 days (8 days for the previous unpaid balance plus 23 days for the current charges).
The sum of the daily balances is (8 x 1,876.00 + 10 x 778.12 + 3 x 2,112.50 + 10 x 1,544.31) = $42,559.42
Therefore, the average daily balance is (1/31) x 42,559.42 = $1,372.57
Next, we need to calculate the monthly periodic rate, which is the APR divided by 12 ,
19.2% / 12 = 1.6%
Then, we can calculate the finance charge using the following formula,
average daily balance x monthly periodic rate x number of days in billing cycle
$1,372.57 x 0.016 x 31 = $676.10
Rounding this amount to the nearest cent gives us a finance charge of $676.09, which is closest to option B: $23.69.
Therefore, the answer is B) $23.69.
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8) computer response time is an important appli- cation of the gamma and exponential distributions. suppose that a study of a certain computer system reveals that the response time, in seconds, has an ex- ponential distribution with a mean of 3 seconds. (a) what is the probability that response time exceeds 5 seconds? (b) what is the probability that response time exceeds 10 seconds?
The probability that the response time exceeds 5 seconds is about 0.2231. The probability that the response time exceeds 10 seconds is about 0.0498. These probabilities are calculated using the CDF of the exponential distribution with mean 3 seconds.
The probability that the response time exceeds 5 seconds can be calculated using the cumulative distribution function (CDF) of the exponential distribution:
P(X > 5) = 1 - P(X ≤ 5) = 1 - F(5)
where F(x) is the CDF of the exponential distribution with mean 3 seconds. The CDF is given by:
F(x) = 1 - e^(-x/3)
Substituting x=5, we get:
P(X > 5) = 1 - F(5) = 1 - (1 - e^(-5/3)) = e^(-5/3) ≈ 0.2231
Therefore, the probability that the response time exceeds 5 seconds is approximately 0.2231.
Using the same method as above, we can calculate the probability that the response time exceeds 10 seconds:
P(X > 10) = 1 - P(X ≤ 10) = 1 - F(10) = 1 - (1 - e^(-10/3)) = e^(-10/3) ≈ 0.0498
Therefore, the probability that the response time exceeds 10 seconds is approximately 0.0498.
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If you spin the spinner 7 times, what is the best prediction possible for the number of times it will land on blue or pink
Answer:
Blue
Step-by-step explanation:
i did this before
$1000 is deposited in an account with a 8.5% interest rate, compounded continuously. What is the balance after 5 years? Enter P, or the principal (initial) investment.
Answer:1000
Step-by-step explanation: This is what you start out with
The balance after 5 years is $1530.40 in the given case.
The formula for the balance A after t years with continuous compounding at an annual interest rate r for an initial investment P is given by:
[tex]A = Pe^(rt)[/tex]
where e is the mathematical constant approximately equal to 2.71828.
In this problem, P = $1000, r = 0.085 (since the interest rate is 8.5%), and t = 5 years. Therefore, the balance after 5 years with continuous compounding is:
[tex]A = 1000e^(0.0855)\\= 1000e^0.425\\= 10001.5304\\= $1530.40[/tex] (rounded to two decimal places)
Therefore, the balance after 5 years is $1530.40.
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Does the following table of values describe a linear function? If it does, what is the rate of change?
x 5 6 7 8
y 10 8 6 4
correctly answer pls
The rate of change (slope) is -2.
To determine if the table of values describes a linear function, we need to check if there is a constant rate of change between any two points.
Using the first two points, we can find the rate of change (slope) as:
slope = (y2 - y1) / (x2 - x1)
= (8 - 10) / (6 - 5)
= -2
Using the second two points, we can also find the rate of change as:
slope = (y2 - y1) / (x2 - x1)
= (6 - 8) / (7 - 6)
= -2
Since both rates of change are the same, the table of values describes a linear function. The rate of change (slope) is -2.
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Help solve will post the remaining now
The number 357 in binary is 101100101 and x^2 - 3x - 10 when factored is (x - 5)(x + 2). Other solutions are below
Constructing the triangleThe triangle and the loci are attached
Converting to binary, factoring and completing square(a) To convert 357 to a binary number, we can use the division-by-2 method:
357/2 gives 178 R 1
178/2 gives 89 R 0
89/2 gives 44 R 1
44/2 gives 22 R 0
22/2 gives 11 R 0
11/2 gives 5 R 1
5/2 gives 2R1
2/2 gives 1R0
1/2 gives 0 R 1
Therefore, 357 in binary is 101100101
(b) To factorise x^2 - 3x - 10, we have
x^2 - 3x - 10 = (x - 5)(x + 2)
(c) To solve 5x^2 - 7x + 1 = 0 using completing the square, we have:
x^2 - (7/5)x + 1/5 = 0 -- make the coefficient of x^2 equals 1
So, we have
x^2 - (7/5)x = -1/5
Next, we have
x^2 - (7/5)x + (7/10)^2 = -1/5 + (7/10)^2
Factorize
(x - 7/100)^2 = -1/5 + (7/10)^2
Simplifying the right-hand side, we get:
(x - 7/10)^2 = 29/100
Taking the square root of both sides, we get:
x - 7/10 = ±√29/10
Adding 7/10 to both sides, we get:
x = 7/10 ±√29/10
So, we have
x = 7/10 + √29/10 or x = 7/10 - √29/10
Evaluate
x = 1.24 or x = 0.16
Therefore, the solutions are x = 0.160 and x = 1.24, rounded to 2 decimal places.
Solving the Modulus and Frustrum(a) To evaluate 102 (mod 4), we divide 102 by 4 and find the remainder:
102 divided by 4 gives a quotient of 25 with a remainder of 2.
Therefore, 102 (mod 4) is 2.
(b) First, we need to find the volume of the bucket. We can do this by treating it as a frustum of a cone:
The radius of the top of the frustum is 10m, the radius of the bottom is 6m, and the height is 16 m.
The volume of a frustum of a cone is given by:
V = (1/3)πh(R^2 + r^2 + Rr),
Plugging in the values, we get:
V = (1/3) * 3.14 * 16 * (10^2 + 6^2 + 10*6)
V = 3282.35 m^3
Finally, we can find the depth of water in the rectangular tin by using the formula for volume:
V = Bh
where B is the area of the base of the tin and h is the height of the water in the tin.
Plugging in the values, we get:
3282.35 m^3 = 48 cm^2 h
So, we have
3282.35 m^3 = 0.0048 m^2 h
Solving for h, we get:
h = 683822.916667 m
Approximate
h = 683822.92 m
Therefore, the depth of water in the tin is 683822.92 m
Perimeter of sectorThe area of a sector of a circle is given by:
A = (θ/360)πr^2,
So, we have
300 = (θ/360)
300 = (θ/360) * (22) * 112
Solving for θ, we get:
θ = 300 * 360 * 1/(22 * 112)
θ ≈ 43.83 degrees
The perimeter of the sector is the sum of the arc length and the lengths of the two radii that form the sector.
The arc length is given by:
s = (θ/360)2πr
Plugging in the values, we get:
s = (43.83/360)(2)(22/7)(28)
s ≈ 21.43 cm
The length of each radius is 28 cm. Therefore, the perimeter of the sector is:
P = 2(28) + 21.43
P ≈ 77.43 cm
Therefore, the perimeter of the sector is 77.43 cm, rounded to 2 decimal places.
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Type the correct answer in the box 7+ (5-92 + 3(16 ÷ 8). The value of the expression is
Answer:
-86
Step-by-step explanation:
Calculate the expression in the brackets:
7 + ( 5 - 92 + 3 x 2 )
Simplify:
7 + ( 5 - 92 + 6 )
7 + ( 5 - 98 )
7 + ( -93 )
7 - 93
-86
Can someone help me ASAP it’s due tomorrow. I will give brainliest if it’s all done correctly. Show work.
a) The sample space of randomly selecting 2 lollipops with replacement is {GG, GC, GL, CG, CC, CL, LG, LC, LL}
b) The sample space of randomly selecting 2 lollipops without replacement is {GC, GL, CG, CL, LG, LC}.
c) The experiment in Part B shows dependent events. The experiment in Part A shows independent events.
What is sample space?It is denoted by the symbol "S" and is a fundamental concept in probability theory because it provides a way to describe all the possible outcomes of an experiment or event.
According to question:Part A: The sample space of randomly selecting 2 lollipops with replacement is:
{GG, GC, GL, CG, CC, CL, LG, LC, LL}
Part B: The sample space of randomly selecting 2 lollipops without replacement is:
{GC, GL, CG, CL, LG, LC}
Part C: The experiment in Part B shows dependent events because the outcome of the first draw affects the outcome of the second draw. For example, if the first lollipop drawn is grape, then there is only one grape lollipop remaining, which affects the probability of drawing another grape lollipop on the second draw. The experiment in Part A shows independent events because each draw is done with replacement, so the outcome of the first draw does not affect the probability of the second draw. For example, the probability of drawing a grape lollipop on the second draw is the same whether or not a grape lollipop was drawn on the first draw.
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the weights of a large number of miniature poodles are approximately normally distributed with a mean of 8 kilograms and a standard deviation of 0.9 kilogram. if measurements are recorded to the nearest tenth of a kilogram, find the fraction of these poodles with weights (a) over 9.5 kilograms; (b) of at most 8.6 kilograms; (c) between 7.3 and 9.1 kilograms inclusive
(a) The fraction of poodles with weights over 9.5 kilograms is about 0.0475
(b) The fraction of poodles with weights of at most 8.6 kilograms is about 0.7486
(c) The fraction of poodles with weights between 7.3 and 9.1 kilograms inclusive is about 0.6488
We can solve this problem using the standard normal distribution, which has a mean of 0 and a standard deviation of 1. We'll first standardize the given values using the formula
z = (x - μ) / σ
where z is the standard score, x is the given value, μ is the mean, and σ is the standard deviation.
(a) To find the fraction of poodles with weights over 9.5 kilograms, we standardize 9.5 kg as follows
z = (9.5 - 8) / 0.9
z = 1.67
Using a standard normal distribution table or calculator, we find that the area to the right of z = 1.67 is approximately 0.0475. Therefore, the fraction of poodles with weights over 9.5 kg is about 0.0475
(b) To find the fraction of poodles with weights of at most 8.6 kilograms, we standardize 8.6 kg as follows
z = (8.6 - 8) / 0.9
z = 0.67
Using a standard normal distribution table or calculator, we find that the area to the left of z = 0.67 is approximately 0.7486. Therefore, the fraction of poodles with weights of at most 8.6 kg is about 0.7486 or 74.86%.
(c) To find the fraction of poodles with weights between 7.3 and 9.1 kilograms inclusive, we standardize both values
z1 = (7.3 - 8) / 0.9
z1 = -0.78
z2 = (9.1 - 8) / 0.9
z2 = 1.11
Using a standard normal distribution table or calculator, we find the area to the left of z1 is approximately 0.2177 and the area to the left of z2 is approximately 0.8665. Therefore, the area between z1 and z2 is
0.8665 - 0.2177 = 0.6488
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an index that is calculated from sample data and whose value determines whether to accept or reject a null hypothesis is a
The appropriate test statistic for the hypothesis being tested and to compare the test statistic to a critical value from a distribution table.
An index that is calculated from sample data and whose value determines whether to accept or reject a null hypothesis is a test statistic.
A test statistic is used to determine the probability of obtaining the observed data under the null hypothesis.
If the test statistic falls within a specified range, the null hypothesis is accepted.
If the test statistic falls outside of the specified range, the null hypothesis is rejected.
The test statistic is calculated from the sample data and is based on the distribution of the sample data.
There are many different types of test statistics, each of which is used to test a different hypothesis.
Some common test statistics include the t-statistic, the F-statistic, and the chi-square statistic.
The t-statistic is used to test the difference between the means of two populations.
The F-statistic is used to test the equality of variances between two populations.
The chi-square statistic is used to test the independence of two categorical variables.
In order to calculate a test statistic, one must first formulate a null hypothesis and an alternative hypothesis.
The null hypothesis is the hypothesis that is assumed to be true, and the alternative hypothesis is the hypothesis that is being tested. The test statistic is then calculated from the sample data, and its value is compared to a critical value from a distribution table.
If the test statistic is greater than or equal to the critical value, the null hypothesis is rejected. If the test statistic is less than the critical value, the null hypothesis is accepted.
In conclusion, a test statistic is an index that is calculated from sample data and is used to determine whether to accept or reject a null hypothesis.
It is important to use the appropriate test statistic for the hypothesis being tested and to compare the test statistic to a critical value from a distribution table.
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1. What is the vertex of f(x) = 3(x + 2)^2 - 4?
2. Does this function have a maximum or minimum value? f(x) = (x - 4)^2 +3?
Answer:
3) A. (-2, - 4);4) B. Minimum.----------------------------
Question 3The vertex form of a parabola is:
f(x) = a(x - h)² + k, where a - leading coefficient, (h, k) - the vertexGiven equation is:
f(x) = 3(x + 2)² - 4Hence h = - 2, k = - 4, therefore its vertex is (- 2, - 4).
Question 4When a > 0, the graph opens up, it means the function has a minimum but no maximum value;When a < 0, the graph opens down, it means the function has a maximum but no minimum value.Given function:
f(x) = (x - 4)² + 3,It has a = 1, hence the graph opens up, therefore the function has a minimum.
miscanthus harvest in the fall contains 80% of solids. inoculum contains 5% of solid. if a batch digester is operated with 1 ton of miscanthus and 10 tons of inoculum. what is the overall ts content? how much water is needed if we want to adjust the ts to 9%
The water is needed if we want to adjust the total solid (TS) to 9% that is given by 990 kg.
The process of multiplying integers in the shape of a fraction is called cross multiplication. Cross multiplying, also known as cross multiplication, is the process of multiplying the numerator of one fraction by the denominator of the other fraction on the other side of an equals to sign. Cross multiplication is a method for comparing fractions.
Cross multiplying is the process of multiplying the first fraction's numerator, which is on one side of the equals to symbol, by the second fraction's denominator, which is on the other side of the equals to sign. The second fraction's numerator is multiplied by the denominator of the first fraction in a similar manner. Cross multiply is another name for the butterfly method or cross-multiplication. The cross-multiplication approach is used to find one or more variables in a fraction. Cross multiplying may be used to compare fractions as well.
We have,
Miscanthus contains 80% solids
Inoculum contains 5%
Total batch of Miscanthus is 1 ton = 1000 kg
and 10 tons of inoculum is 10,000 kg
So, Miscanthus = 1000 x 80% = 800 kg solid
Inoculum = 10000 x 5% = 5000 kg solid
So the total TS = 800 + 5000 = 5800 kg.
The amount of water needed if TS is 9%.
For 5800 kg we need 11000 kg so for, 522 kg we need, 990 Kg of water.
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Find the greatest common factor of 7, 15,7,15,7, comma, 15, comma and 212121.
Answer: The GCF of 7, 15, & 21 is 1
Step-by-step explanation: the greatest number that divides all three numbers is 1
three cards are drawn from an ordinary deck of 52 cards. find the probability that the 3-cards hand contains only face cards.
The probability that the 3-card hand contains only face cards is 1/100 or 0.01.
To find the probability that the 3-card hand contains only face cards, we'll follow these steps:
1. Determine the total number of ways to draw 3 cards from a deck of 52 cards.
2. Determine the total number of ways to draw 3 face cards from the deck.
3. Divide the number of ways to draw 3 face cards by the total number of ways to draw 3 cards.
Calculate the total number of ways to draw 3 cards from a deck of 52 cards.
This can be found using the combination formula,
which is C(n, k) = n! / (k!(n-k)!),
where n is the total number of cards and k is the number of cards drawn.
In this case, n=52 and k=3.
C(52, 3) = 52! / (3!(52-3)!)
= 22100
Calculate the total number of ways to draw 3 face cards from the deck.
There are 12 face cards in the deck (4 suits with 3 face cards each: Jack, Queen, and King).
We need to find the number of ways to choose 3 face cards from these 12.
C(12, 3) = 12! / (3!(12-3)!) = 220
Divide the number of ways to draw 3 face cards by the total number of ways to draw 3 cards.
Probability = (Number of ways to draw 3 face cards) / (Total number of ways to draw 3 cards)
= 220 / 22100
= 1/100
The probability that the 3-card hand contains only face cards is 1/100 or 0.01.
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PLEASE HELP ILL GIVE BRAINLIEST
Answer: supplementary same side exterior angles
Step-by-step explanation:
A rectangular page contains 35 square inches of print. The margins at the top and bottom of the page are each 2 inches deep. The margins on each side are 1 inch wide. What should the dimensions of the page (in inches) be to use the least amount of paper? (Round your answers to two decimal places.)
The dimensions of the rectangular page (in inches) to be use the least amount of paper will be 8.37 inch and 4.18 inch.
What is rectangle?A Rectangular shape is a four sided-polygon, having all the internal angles equal to 90 degrees or one right angle. The two sides at each corner meet at right angles. The opposite sides of the rectangle are equal in length.
Let, x width of the rectangular area that is to be printed
y height of the area that is to be printed.
Given that A rectangular page contains 35 square inches of print.
so xy= 35 a constant-------------(1)[ by the formula of rectangular area]
we want to minimize.
f(x, y) = (x+4)(y+2)
= xy+4y+2x+8
= 35+8+4y+2x [putting the value from equation (1)]
= 43+4y+2x
We have to minimize the function
g(x, y)= 4y+2x
= 4(35/x)+ 2x
= 140/x+2x
Let us take h(x)= 140/x+2x
h'(x)= d/dx( 140/x+2x)
= -140/x² + 2
For minimum value we will take h'(x)=0
-140/x² + 2=0
⇒2x² =140
⇒x² =70
⇒x= √70=8.37
y =35/√70= 4.18
Hence, the dimensions of the page (in inches) to be use the least amount of paper will be 8.37 inch and 4.18 inch.
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not all ebp projects result in statistically significant results. define clinical significance, and explain the difference between clinical and statistical significance. how can you use clinical significance to support positive outcomes in your project?
Statistical significance is important in judging the efficacy of a particular intervention.
whereas clinical significance focuses on the practical importance of an intervention and its impact on patient outcomes.
Clinical significance refers to the practical importance or relevance of a particular intervention or outcome in a clinical setting.
It addresses the degree to which a particular treatment or intervention improves a patient's overall functioning or quality of life.
Statistical significance, on the other hand, refers to the probability that a particular finding or result would have occurred by chance.
It is based on statistical tests to determine whether differences between two groups or treatments are statistically significant.
Statistical significance is important in determining whether a particular intervention is effective, whereas clinical significance is more important to clinicians and patients.
Interventions may produce statistically significant results, but may not be clinically significant if the improvement is not meaningful for the patient's daily life or overall health.
To harness clinical significance to support positive outcomes in EBP projects, it is important to focus on patient-centered outcomes that are relevant to patient needs and goals.
For example, a project evaluating a new drug for depression could demonstrate that the drug not only provided a statistically significant improvement in depressive symptoms.
Clinical relevance was demonstrated. Ability to return to social functioning or work.
More relevant for patients and clinicians. By prioritizing patient-centered outcomes and measuring the practical impact of interventions, healthcare providers can leverage clinical relevance to support positive outcomes of EBP projects.
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chelsea is making a craft item that requires 2/3 yd of material to make. How many can she make if she has 3 1/3 yd of material?
please help!! I really don’t understand
To find out how many craft items Chelsea can make, we need to divide the total amount of material she has by the amount of material needed to make one craft item.
First, we need to convert 3 1/3 yards to an improper fraction:
3 1/3 = (3 x 3) + 1 = 10/3 yards
Now we can set up the division:
10/3 yards ÷ 2/3 yards per craft item
To divide fractions, we can multiply by the reciprocal of the second fraction:
10/3 yards x 3/2 yards per craft item = 15/2 or 7.5 craft items
Therefore, Chelsea can make 7.5 craft items with 3 1/3 yards of material. Since she can't make a fraction of a craft item, she could make 7 craft items with some material left over.
what is -9(x+2)^(2)-9 in standard form
Answer:
Step-by-step explanation:
-9x^2-36x-45
a polling firm tried to predict the results of an election by sampling 1,000 adults within a state for two days prior to the election, using landline telephones of likely voters. after the election, the firm found that their poll results were not close to the actual election results. which of the following recommendations would be the best for the firm to follow in the future? responses sample people who have cell phones, in addition to those with landlines. sample people who have cell phones, in addition to those with landlines. conduct the survey over a one-day period rather than two days. conduct the survey over a one-day period rather than two days. adjust the results if the sample includes more people from one party than another. adjust the results if the sample includes more people from one party than another. use an internet-based poll that encourages people to vote online for their preferred candidate.
The best recommendation for the polling firm to follow in the future would be to sample people who have cell phones, in addition to those with landlines.
This approach would help in increasing the diversity of the sample, as relying solely on landline telephones may lead to underrepresentation of certain demographics, such as younger voters who are more likely to use cell phones instead of landlines.
By including both landline and cell phone users, the firm would be able to gather a more accurate and representative sample of the population, which would result in better predictions for the election outcomes.
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Instructions: Given the following coordinates complete the reflection transformation.
A(2,0)
B(4,1)
C(6,-4)
Transformation: Complete the reflection over the x-axis followed by y-axis.
A"(
B"(
C"(
Therefore , the solution of the given problem of coordinates comes out to be B''' = (-4, -1) and C''' = (-6, 4)
What precisely is a coordinate plane?Using a variety of elements or coordinates, a reference frame can precisely determine position when used in conjunction with other mathematical elements on this location, such as Euclidean space. One can find a thing or a location in mirrored flight by using the coordinates of the which appear like collections of numbers. A pair surface is able to be used to locate an item using the y and x coordinates.
Here,
We flip a point across the x-axis while maintaining the y-coordinate to mirror it over the x-axis.
We flip a point across the y-axis while maintaining the x-coordinate to mirror it over the y-axis.
Overlooking the x-axis:
A' = (2, 0) -> A'' = (2, -0) = (2, 0)
B' = (4, 1) -> B'' = (4, -1)
C' = (6, -4) -> C'' = (6, 4)
Considering the y-axis:
A'' = (2, 0) -> A''' = (-2, 0)
B'' = (4, -1) -> B''' = (-4, -1)
C'' = (6, 4) -> C''' = (-6, 4)
As a result, after reflecting A, B, and C over the x-axis and then the y-axis, the finished image is as follows: A''' = (-2, 0)
B''' = (-4, -1)
C''' = (-6, 4)
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I need help please fast
(the blank is "profit" or "loss")
sinx+2cosx-cos2x+cosx
This expression can be simplified by using some trigonometric identities12. First, we can use the identity sin(2x) = 2sin(x)cos(x) to rewrite the first term. Then, we can use the identity cos(2x) = cos^2(x) - sin^2(x) to rewrite the fourth term. We get:
sin(x) + 2cos(x) - cos(2x) + cos(x) = 2sin(x)cos(x) + 2cos(x) - (cos^2(x) - sin^2(x)) + cos(x) = 2sin(x)cos(x) + 3cos(x) - cos^2(x) + sin^2(x)
Next, we can use the identity sin^2(x) + cos^2(x) = 1 to simplify the last two terms. We get:
= 2sin(x)cos(x) + 3cos(x) - cos^2(x) + sin^2(x) = 2sin(x)cos(x) + 3cos(x) - cos^2(x) + (1 - cos^2(x)) = 2sin(x)cos(x) + 3cos(x) + 1
This is the simplest form of the expression.
what is the probability that in seven rolls of a six-sided die, the result of 2 appears exactly 4 times? (prefer to put answer as fraction. if answer as decimal, please leave to the ten thousandths place like 0.0001)
The required probability of rolling a 2 exactly 4 times in 7 rolls of a six-sided die is [tex]\frac{161}{5000}[/tex] in fraction form or approximately 0.03226 as a decimal.
What is Probability?A number that indicates how likely an event is to occur is called its probability. It is expressed as a number between 0 and 1 or as a percentage using percentage notation between 0% and 100%. The higher the probability, the more likely the event is to occur.
According to question;
[tex]$\begin{aligned} P(X = 4) &= \binom{7}{4} \left(\frac{1}{6}\right)^4 \left(\frac{5}{6}\right)^3 \\&= \frac{7!}{4!3!} \cdot \frac{1}{6^4} \cdot \frac{5^3}{6^3} \\&= \frac{35 \cdot 125}{6^7} \\&= \frac{4375}{135216} \\&\approx 0.03226\end{aligned}[/tex]
Therefore, the probability of rolling a 2 exactly 4 times in 7 rolls of a six-sided die is [tex]\frac{161}{5000}[/tex] in fraction form or approximately 0.03226 as a decimal.
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write the inverse of the function you wrote. What are the input and the output of his inverse function?
Answer:
i cant solve what i cant see
Step-by-step explanation:
there is no problem
Vector u has initial point at (4, 4) and terminal point at (–12, 8). Which are the magnitude and direction of u?
||u|| = 14.422; θ = 33.690°
||u|| = 14.422; θ = 146.310°
||u|| = 16.492; θ = 14.036°
||u|| = 16.492; θ = 165.964°
||u|| = 16.492; θ = 165.964° are the vector magnitude and direction of u.
What is a straightforward definition of a vector?
A quantity or phenomena with both size and direction being independent of one another is called a vector. Also, the phrase specifies how such a quantity is represented mathematically or geometrically. Examples of vectors in nature include weight, force, electromagnetic fields, momentum, and velocity.
Let's find the magnitude of each component:
Let
(x₁,y₁ ) = (4,4)
(x₂ , y₂ ) = (-12 , 8 )
u = ax + by
ll u ll = √a² + b²
So, let's find a and b:
a = l x₂ - x₁ l =l -12 - 4 l = l -16 l = 16
b = l y₂ - y₁ l = l 8 - 4 l = l4l = 4
so,
ll u ll = √16² + 4²
= √272
≈ 16.492
And the direction is:
θ = 180 - tan⁻¹ (b/a )
= 180 - tan⁻¹(4/16)
θ ≈ 180 - tan⁻¹ (4/16)
≈ 165.953.
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A certain card established an account charging 1.0111% interest per month on the account balance. Interest charges are added to the balance each month, becoming part of the balance on which interest is computed the next month. If you pay off the original purchase charge within 3 months, all interest charges are canceled. Otherwise, you are liable for all the interest. Suppose you purchase $3300 worth of carpeting under this plan, and that you pay off the account 1 day late (3 months plus 1 day). What total interest amount must you pay? Do not include interest for the one extra day.
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Part 1
The total interest that must be paid is $enter your response here.
(Type an integer or a decimal rounded to the nearest cent as needed.)
The total interest that must be paid is $101.32.
Based on the information, you would need to pay a total interest amount of $101.32.
How to calculate the interestFirst, let's calculate the interest charges for each month:
Month 1:
Interest charge = (0.010111 * $3300) = $33.4363
Month 2:
New balance = $3300 + $33.4363 = $3333.4363
Interest charge = (0.010111 * $3333.4363) = $33.7707
Month 3:
New balance = $3333.4363 + $33.7707 = $3367.207
Interest charge = (0.010111 * $3367.207) = $34.1167
Now, if the account is paid off within the 3-month period, all interest charges are canceled. However, since the payment is made 1 day late, the interest for that extra day is not canceled.
Total interest amount = $33.4363 + $33.7707 + $34.1167
= $101.3237
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Convert the polar equation to rectangular form [tex]r = 2 cos theta + 2 sin theta[/tex]
A. [tex](x-1)^2-(y-1)^2=2[/tex]
B. [tex](x+1)^2-(y+1)^2=2[/tex]
C. [tex](x-2)^2-(y-2)^2=1[/tex]
D. [tex](x+2)^2-(y+2)^2=1[/tex]
Answer:
A. (x - 1)² + (y - 1)² = 2
This is the equation of circle with center at (1, 1) and radius √2
Step-by-step explanation:
We can use the following trigonometric identities to convert the given polar equation to rectangular form:
cosθ = x / r
sinθ = y / r
Substituting these identities into the given polar equation, we get:
r = 2cosθ + 2sinθ = 2(x / r) + 2(y / r)
Multiplying both sides by r, we get:
r² = 2x + 2y
We can also use the Pythagorean identity to express r² in terms of x and y:
r² = x² + y²
Substituting this expression into the previous equation, we get:
x² + y² = 2x + 2y
x²+y² = 2y+2x
x²-2x+y2-2y=0
(x²-2x+1)+(y²-2y+1)=2
(x-1)²+(y-1)² = (√2)²
This is the equation of circle with center at (1, 1) and radius √2
OR
Completing the square for both x and y terms, we get:
(x - 1)² - 1 + (y - 1)² - 1 = 0
Simplifying, we get:
(x - 1)² + (y - 1)² = 2
Therefore, the rectangular form of the polar equation r = 2cosθ + 2sinθ is:
A. (x - 1)² + (y - 1)² = 2
chatgpt
2x - 7y=-3
4x - 5y = 12
If (x, y) is the solution to the system of equations above, what is the
value of y²?
First, we multiply the first equation by 5 and the second equation by 7, then subtract the first equation from the second equation to eliminate y. Next, we substitute x = 11/2 into one of the original equations to solve for y. The solution is (x, y) = (11/2, 2). To find the value of y2, we square the value of y.
What is an equation?A mathematical statement known as an equation utilizes the equal symbol (=) to demonstrate the equality of two expressions. A mathematical equation normally consists of constants, variables, and operations such addition, subtraction, multiplication, and division.
To solve this system of equations, we can use the method of elimination.
First, we will multiply the first equation by 5 and the second equation by 7 to get:
10x - 35y = -15
28x - 35y = 84
Now, we can subtract the first equation from the second equation to eliminate y:
28x - 10x - 35y + 35y = 84 - (-15)
18x = 99
x = 99/18 = 11/2
Next, we can substitute x = 11/2 into one of the original equations to solve for y. We'll use the first equation:
2x - 7y = -3
2(11/2) - 7y = -3
11 - 7y = -3
-7y = -14
y = 2
Therefore, the solution to the system of equations is (x, y) = (11/2, 2).
To find the value of y², we simply square the value of y:
y² = 2² = 4
So the value of y² is 4.
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as the size of a sample increases, the standard deviation of the distribution of sample means increases always. (true/false).
The given statement "as the size of a sample increases, the standard deviation of the distribution of sample means increases always." is false. As the sample size increases, the standard deviation of the distribution of sample means decreases, not increases.
This is due to the Central Limit Theorem, which states that as the sample size increases, the distribution of sample means approaches a normal distribution with a mean equal to the population mean and a standard deviation equal to the population standard deviation divided by the square root of the sample size.
Therefore, as the sample size gets larger, the distribution becomes more concentrated around the population mean, which results in a smaller standard deviation. This is why larger sample sizes are generally preferred in statistical analysis, as they provide more accurate estimates of the population parameters.
So, the given statement is false.
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-5(-2)^3+8(-2)^2. Simplify your answer
Ans:-
[tex] \fbox{ \: \sf \purple 8 \: \: }[/tex][tex] \: [/tex]
Solution:-
[tex]↣ \: \textsf{-5 ( -2 )³ + 8 ( -2 )²}[/tex]
[tex] \: [/tex]
[tex] ↣ \: \textsf{-5 ( -8 ) + 8 ( -4 )}[/tex]
[tex] \: [/tex]
[tex] ↣ \: \textsf{40 + ( -32 ) }[/tex]
[tex] \: [/tex]
[tex] \textsf{[ + , - = - ]}[/tex]
[tex] \: [/tex]
[tex]↣ \: \textsf{40 - 32 }[/tex]
[tex] \: [/tex]
[tex] \underline{ \underline{↣ \textsf \orange{ \: \: 8 \: \: \: }}}[/tex]
[tex] \: [/tex]
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hope it helps!:)