Answer: (10,5) and (0,5)
Step-by-step explanation:
12. Solve x^2 + 6x - 16 = 0 by completing the square.
Please help and show work
Answer:
x is 2 and -8
Step-by-step explanation:
[tex] {x}^{2} + 6x - 16 = 0[/tex]
general equation
[tex] {ax}^{2} + (sum)x + product = 0[/tex]
sum is 6, product is -16
for completing squares,
first divide the sum by 2:
[tex] = \frac{6}{2} = 3[/tex]
add the square of the result on (x² + 6x) and subtract it from the product:
[tex] ( {x}^{2} + 6x + {3}^{2} ) - 16 - {3}^{2} = 0 \\ {(x + 3)}^{2} - 25 = 0 \\ {(x + 3)}^{2} = 25[/tex]
take square root:
[tex] \sqrt{ {(x + 3)}^{2} } = \sqrt{25 } \\ x + 3 = ±5 \\ x = ±5 - 3[/tex]
x is either: 5-3 or -5-3
[tex]x = 2 \: \: and \: - 8[/tex]
Can someone help with trig identities?
(calculators are allowed)
Answer:
d
Step-by-step explanation:
cosA^2 = 1 - sinA^2
subtitute 1/4 below
= 1 - (1/4)^2
= 1 - 1/16
after calculation
= - 0.9682
Help please! What’s do you see/notice about the pattern below?
Answer:
Uhm, I see there's a pattern, but there are only 2 green boxes, whole there are 4 orange boxes in every figure.
What is the best definition of a. Angle
Answer:
the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.
Step-by-step explanation:
Y’all please help me with c
Answer:
Pretty sure you'd be in hell by then 0_0
Step-by-step explanation:
think of it-2,200 ft and your at 0. Your in hell!
Help me out please! Anybody? I’m so confused
2) Write the Inverse for the following linear function: f(x) f(x) = -x +5 F. F-'(x) = (x - 5) G. 8-1(x) = x +5 1.8-(x) = x - 5 1. f-'(x) = (x + 5)
Answer:
[tex]f(x)^{-1}=-x+5[/tex]
Step-by-step explanation:
It looks like the function is f(x)=-x+5.
To find the inverse, first replace f(x) with y.
y=-x+5
Switch the y and x.
x=-y+5.
Solve for y.
x-5=-y
-x+5=y
[tex]f(x)^{-1}=-x+5[/tex]
I hope this helps!
pls ❤ and mark brainliest pls
A man is considered overweight if he has a body mass index of 27.8 kg/m2 or greater. This point is used because it represents the sex-speci c 85th percentile for males 20-29 years of age in the 1976-1980 National Health and Nutrition Examination Survey. In 1994, of 700 men 20-34 years old, 160 were found to be overweight, whereas, in 1980, of 750 men 20-34 years old, 130 were found to be overweight. At the 1% signi cance level, do the data provide sucient evidence to conclude that for men 20-34 years old, a higher percentage were overweight in 1994 than 14 years earlier?
Answer:
oknulhidgzfczgxdgggysfrggugdchggjghhc
order these numbers in ascending order. 14, -60, 6.28,-19
Answer:
-60 , -19 , 6.28 , 14
Step-by-step explanation:
Order the number in ascending order, or from least to greatest. Note that the bigger the negative number, the smaller the number. The bigger the positive number, the bigger the number:
-60 , -19 , 6.28 , 14
~
Note: For 6.28, the decimal point results in 6 being in the ones place, 2 being in the tenths place, 8 being in the hundredths place. By the rules regarding the usage of decimals, place values after the decimal point will be significantly less then the place values before the decimal point, and would be used to determine a more exact value.
4. Find the difference. Put
your answer in lowest terms.
9/11 - 1/3 =
You are designing a metal sculpture that will be placed in front of your school. You sketch an initial design
with a scale of 1 cm = 2 feet. The design shows that the sculpture has a length of 8 feet.
After reviewing your design, the principal asks you to use the same drawing, but change the scale to 1 cm
= 5 feet.
What will be the length of the sculpture using the new scale?
A. 8 feet
B. 12 feet
C. 15 feet
D. 20 feet
Using proportions, it is found that the length of the sculpture using the new scale is given by:
D. 20 feet.
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three.
The initial scale is of 1 cm = 2 feet, with a sculpture of 8 feet, hence the length of the drawing is given by:
l = 8/2 = 4 cm.
For the new scale, 1 cm = 5 feet, and you keep the drawing of 4 cm, hence the length of the sculpture is given by:
l = 4 x 5 = 20 feet.
Hence option D is correct.
More can be learned about proportions at https://brainly.com/question/24372153
#SPJ1
The digit 5 is usually rounded up, but it can also be rounded down. How would you round the numbers in the equation 9.5 + 4.7 + 3.2 + 7.5 = x to the nearest whole number without getting an overestimate or an underestimate?
Answer:
I would round 5 up and anything below 5 would be rounded down.
10 + 4 + 3 + 8 = x
25 = x
Answer:
Let me know if I explain this wrong but from what I understand, what you would do is 9m5 and 7.5 together ad .5 and .5 are 1. That means 9+1+7. Next is 4.7 and 3.2 The problem with this us that .7 and .2 are .9 however that is important. 4+3 is 7 and we know .9 so it's 7.9. now just add the whole numbers and 7.9 and then you get your perfect answer. this answer was mainly just distributive property. hope I helped
a rectangle has a length of 45 feet and height of 20 yards. What is the perimeter of this rectangle in feet
Perimeter is the distance around the rectangle and the formula is 2 x length + 2 x height.
Perimeter = 2 x45 + 2x20
Perimeter = 90 + 40
Perimeter = 130 yards
Answer:
Given :-Length = 45 yard
Height = 20 yards
To Find :-Perimeter
Solution :-We know that
[tex] \: perimeter = 2(l + b)[/tex]
» Perimeter = 2(45 + 20)
» Perimeter = 2(65)
» Perimeter = 130 yards
An open box is to be made from a square piece of cardboard, 36 inches by 36 inches, by removing a small square from each corner and folding up the flaps to form the sides. What are the dimensions of the box of greatest volume that can be constructed in this way?
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Answer:
24 in square by 6 in deep
Step-by-step explanation:
Let x represent the side of the square cut from each corner. Then the dimensions of the base of the box are 36-2x in each direction. The total volume of the box is ...
V = LWH = (36 -2x)(36 -2x)x = x(4x² -144x +1296)
The volume will be a maximum where dV/dx = 0.
dV/dx = 12x^2 -288x +1296 = 0
x² -24x +108 = 0 . . . . divide by 12
(x -6)(x -18) = 0 . . . . . factor
x = 6 or 18 . . . . . . x = 18 gives a minimum volume; we want x = 6
Then the dimensions are 36 -2(6) = 24 inches square by 6 inches deep.
55) James left the science museum driving east 1.6 hours before Kim. Kim drove in the opposite direction going 24 km/h slower than James for 1.8 hours after which time they were 258.4 km apart. How fast did James drive?
Please show ur work, I already have the answer but I need to know how to do it. If your answer matched up with the answer key and is correct with work I will give brainliest
9514 1404 393
Answer:
58 km/h
Step-by-step explanation:
Let s represent James's speed. Then s-24 is Kim's speed. The relationship between time, speed, and distance is ...
d = st
Since the two were traveling in opposite directions, their distance apart is the sum of the distances they drove. James drove for 1.6 more hours than the 1.8 hours Kim drove, so their total distance is ...
(1.6 +1.8)s +1.8(s -24) = 258.4
5.2s -43.2 = 258.4 . . . . . . . . . . . . collect terms
5.2s = 301.6 . . . . . . . . . . . add 43.2
s = 58 . . . . . . . . . . . divide by 5.2
James drove at 58 km/h.
brainiest to whoever right
Answer:
x = 33
AB = 60
Step-by-step explanation:
18 + 2x -6 = x+45
x = 33
AB = 33× 2 -6
= 60
Julie knows that the adult population gets, on average, eight hours of sleep each night. A hypothesis test can help her see if college students are different from the adult population. Julie tabulated that her sample of 101 students got an average of 7.1 hours of sleep each night, with a standard deviation of 2.48. Using the data provided and the formula below, what is the t-statistic that Julie calculates
Answer:
-3.64
Step-by-step explanation:
If the mean of a positively skewed distribution is 65, which of these values
could be the median of the distribution?
A. 60
B. 65
C. 70
D. 75
B: is correctly in my opinion
Answer:
60
Step-by-step explanation:
its the answer
You ask your friends what is their favorite color and count how many people fell in each of the categories. Below is the data (total: 60 people, RED-30, BLUE=10, GREEN-20). What is the Chi Square obtained Value?
a) 50
b) 9
c) 10
d) 5
Answer:
A
Step-by-step explanation:
Because lot of people love it
Find all points on the curve x^2y^2+xy=2 where the slope of the tangent line is −1
Differentiate both sides with respect to x and solve for the derivative dy/dx :
[tex]\dfrac{\mathrm d}{\mathrm dx}\left[x^2y^2+xy\right] = \dfrac{\mathrm d}{\mathrm dx}[2] \\\\ \dfrac{\mathrm d}{\mathrm dx}\left[x^2\right]y^2 + x^2\dfrac{\mathrm d}{\mathrm dx}\left[y^2\right] + \dfrac{\mathrm d}{\mathrm dx}\left[x\right]y + x\dfrac{\mathrm dy}{\mathrm dx} = 0 \\\\ 2xy^2 + x^2(2y)\dfrac{\mathrm dy}{\mathrm dx} + y + x\dfrac{\mathrm dy}{\mathrm dx} = 0 \\\\ (2x^2y+x)\dfrac{\mathrm dy}{\mathrm dx} = -2xy^2-y \\\\ \dfrac{\mathrm dy}{\mathrm dx} = -\dfrac{2xy^2+y}{2x^2y+x}[/tex]
This gives the slope of the tangent to the curve at the point (x, y).
If the slope of some tangent line is -1, then
[tex]-\dfrac{2xy^2+y}{2x^2y+x} = -1 \\\\ \dfrac{2xy^2+y}{2x^2y+x} = 1 \\\\ 2xy^2+y = 2x^2y+x \\\\ 2xy^2-2x^2y + y - x = 0 \\\\ 2xy(y-x)+y-x = 0 \\\\ (2xy+1)(y-x) = 0[/tex]
Then either
[tex]2xy+1 = 0\text{ or }y-x=0 \\\\ \implies y=-\dfrac1{2x} \text{ or }y=x[/tex]
In the first case, we'd have
[tex]x^2\left(-\dfrac1{2x}\right)^2+x\left(-\dfrac1{2x}\right) = \dfrac14-\dfrac12 = -\dfrac14\neq2[/tex]
so this case is junk.
In the second case,
[tex]x^2\times x^2+x\times x=x^4+x^2=2 \\\\ x^4+x^2-2 = (x^2-1)(x^2+2)=0[/tex]
which means either
[tex]x^2-1 = 0 \text{ or }x^2+2 = 0 \\\\ x^2 = 1 \text{ or }x^2 = - 2[/tex]
The second case here leads to non-real solutions, so we ignore it. The other case leads to [tex]x=\pm1[/tex].
Find the y-coordinates of the points with x = ±1 :
[tex]x=1 \implies y^2+y=2 \implies y=-2 \text{ or }y=1 \\\\ x=-1\implies y^2-y=2\implies y=-1\text{ or }y=2[/tex]
so the points of interest are (1, -2), (1, 1), (-1, -1), and (-1, 2).
Os
Brainteaser
Unscramble the following letters to form words:
Tsydhau
Fydari
Fydari will be rearranged as "Friday"
Tsydhau B will be rearranged as "Thusday"
Scrambled words are words that are awkwardly arranged to mislead or cause confusion. The opposite of scrambled is unscrambled.
Unscrambling a word means rearranging the words in order to give them a new meaning.
According to the question given, the scrambled words are Tsydhau and
Fydari
Unscrambling the words means rearranging the words to give them new meaning. Hence:
Fydari will be rearranged as "Friday"
Tsydhau B will be rearranged as "Thusday"
Learn more about scrambling here: https://brainly.com/question/23187632
Find the product of 2v3 • 3 V6
Write your answer in simplest radical form.
please answer this question
Answer:
3
Step-by-step explanation:
[tex]log(3x^{3}) - log(x^{2}) = log(\frac{3x^{3}}{x^{2}})\\log(27) - log(x) = log(\frac{27}{x} )\\[/tex]
therefore,
[tex]\frac{3x^{3} }{x^{2} } = \frac{27}{x} \\3x=\frac{27}{x} \\3x^{2} =27\\x= +3\\x=-3[/tex]
however, since logarithms cannot have negative arguments, x can only be +3
i.e. log(-3) is impossible, and will return MATH ERROR on a calculator.
help plz answer quickly
Answer:
plane EBG
Step-by-step explanation:
plane C is also named plane EBG
Answer:
[tex]\\ \sf\longmapsto Plane EBG[/tex]
We can't name it EBF as it is a axis and coplanar points
Also nEF is not a satisfactory name .
So the correct option is C
I will give brainliest !!
Answer:
D
Step-by-step explanation:
When all the members in a domain has only but one member in the do main then function has been satisfied.
considering a situation of,
4 1
6 1
8 2
the domain has only one member in the Co domain hence which makes it a function
I don’t understand how to complete this problem. Will mark brainly
Answer:
6 units²Step-by-step explanation:
Area of ΔABC is:
A = 1/2*AB*CDWe have:
AC = 3AD = 1.8Find CD using Pythagorean:
CD² = AC² - AD² ⇒ CD² = 3² - 1.8² ⇒ CD² = 5.76 ⇒ CD = √5.76 = 2.4Find DB using the following identity, coming from ratios of corresponding sides of similar triangles:
CD² = AD*DB5.76 = 1.8*DBDB = 5.76/1.8DB = 3.2Find AB:
AB = AD + DBAB = 1.8 + 3.2AB = 5Find the area of ΔABC:
A = 1/2*5*2.4A = 6 units²JKL and CDE are congruent. If JKL = 137, what is CDE
<CDE = 137°
When two triangles are congruent:
The corresponding angles are equalThe sizes and shapes are equalThe areas are equalThe perimeters are equalSince △JKL and △CDE are congruent, all the corresponding angles are equal.
Therefore, <JKL = <CDE = 137°
Learn more here: https://brainly.com/question/12077512
what are formulas used to solve polynomials?
Answer:
Polynomial Equation Degree Example
Linear Equations 1 -3x + 1 = 4x + 5
Quadratic Equations 2 x^2 – 6x + 9 = 0
Cubic Equations 3 x^3 – 2x^2 + 3x = -5
Quartic Equations 4 x^4 – 2x^2 = -4
Step-by-step explanation:
Linear Equations
Linear equations are polynomial equations that have a degree of 1.
ax + b = 0
Solving for solutions for this type of equation will require us to isolate the unknown variable on one side of the equation. Master your craft in solving linear equations here.
Quadratic Equations
Quadratic equations are polynomial equations with a degree of 2.
ax2 + bx + c = 0
There are different ways we can solve quadratic equations – it mostly depends on the form of the quadratic expression on the right-hand side.
We can factor quadratic expressions and apply the zero-property.
Applying special algebraic properties such as the difference of two squares, perfect square trinomial properties, and completing the square.
Lastly, we can also use the quadratic formula to find the zeroes of quadratic equations.
Polynomial Equations (with a degree of 3 or higher)
Here’s the exciting part: what if we need to find the zeros of the solutions of a polynomial equation with degrees that are 3 or higher?
Some cubic and quartic equations can be factored by grouping and be reduced to equations with a smaller degree. There are times, however, that finding the actual factors can be challenging.
Two similar figures are similar based on the transformation (x,y) (12x, 3a(squared)y) what is/ are the value(s) of a?
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Answer:
a = ±2
Step-by-step explanation:
For similar figures, the same scale factor applies to both x and y.
12 = 3a²
4 = a²
a = ±√4 = ±2
The graph of y = va is translated 5 units to the left and 7 units up. What is the equation of the graph that results
from this translation?
Answer:
B
Step-by-step explanation:
i did this a couple years ago should be right if im correct