The decimal equivalent of 7 half’s is the number in decimal form
The exact decimal equivalent of 7 half’s is 3.5
What is a decimal number?A decimal number is a number represented by an integer and a fractional part
How to determine the decimal equivalant?The number is given as:
7 halves
Express as product
7 * 1/2
Evaluate the product
3.5
Hence, the exact decimal equivalent of 7 half’s is 3.5
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Dana has 8 baseball cards, 10 football cards, 4 hockey cards, and 14 basketball cards. All the cards are the same size and shape. Dana will select one card at random.
What is the probability that the care selected will be a hockey card?
A. 1/9
B. 1/8
C. 1/4
D. 1/3
Answer:
A. 1/9
Step-by-step explanation:
In order to find probability, you need to add up the total number of cards Dana has.
14 + 10 + 8 + 4 = 36
Then set up a fraction representing probability.
4 hockey cards
---------------------
36 total cards
Simplify
1
---
9
This means that Dana has a 1 out of 9 chance of getting a hockey card.
☆anvipatel77☆
•Expert•
Brainly Community Contributor
Which equation has the solutions x = startfraction negative 3 plus-or-minus startroot 3 endroot i over 2 endfraction? 2x2 6x 9 = 0 x2 3x 12 = 0 x2 3x 3 = 0 2x2 6x 3 = 0
The quadratic equation which matches given solution is x² + 3x + 3 = 0. Then the correct option is C.
What is a quadratic equation?It is a polynomial that is equal to zero. Polynomial of variable power 2, 1, and 0 terms are there. Any equation having one term in which the power of the variable is a maximum of 2 then it is called a quadratic equation.
We know that the formula
[tex]\rm x = \dfrac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]
The solutions are given below.
[tex]\rm x = \dfrac{-3 \pm \sqrt3 \iota }{2}[/tex]
Then
1) 2x² + 6x + 9 = 0, the zeroes of the equation will be
[tex]\rm x = \dfrac{-6\pm 6\iota}{4}\\\\x = \dfrac{-3\pm 3 \iota}{2}[/tex]
2) x² + 3x + 12 = 0, the zeroes of the equation will be
[tex]\rm x = \dfrac{-3\pm \sqrt{39}\iota}{2}[/tex]
3) x² + 3x + 3 = 0, the zeroes of the equation will be
[tex]\rm x = \dfrac{-3\pm \sqrt3\iota}{2}[/tex]
4) 2x² + 6x + 3 = 0, the zeroes of the equation will be
[tex]\rm x = \dfrac{-6\pm 2\sqrt{3}}{4}\\\\x = \dfrac{-3\pm \sqrt3 }{2}[/tex]
More about the quadratic equation link is given below.
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lesson 10.2 area of composite figures worksheet assigment
The composite figure includes a rectangle and trapezoid
The area of the composite figure is 810.5cm².
How to determine the area?From the complete question, we have the following parameters:
Shapes: Rectangle and trapezoid
The area of the rectangle is:
Area = Length × Width
So, we have:
Area = 15 × 23
Area = 345cm²
The area of the trapezium
Area = 0.5 × (a + b) ×h
So, we have:
Area = 0.5 × (15 + 34) × 19
Area = 0.5 × 49 × 19
Area = 465.5cm²
Add both areas to calculate the area of the composite figure
Total area = 345cm² + 465.5cm²
Total area = 810.5cm²
Hence, the area of the composite figure is 810.5cm².
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How is adding and
subtrading decimas
Similar tooro different
from adding and subtrocling
whole numbers
Jody has already hiked 4 kilometers. The trail is 12 kilometers long. She can hike 2.5 kilometers per hour. Which function will help Jody will help figure out how many more hour, h, she needs to hike?
Answer:
2.5h + 4 = 12 is your equation
2.5h = 12 - 4
2.5h = 8
h = 8 / 2.5
h = 3.2 hrs
Step-by-step explanation:
Answer:
2.5h + 4 = 12 is your equation
2.5h = 12 - 4
2.5h = 8
h = 8 / 2.5
h = 3.2 hrs
III NNNNEEEEEEED HHHEEEEEEELLLLLPPPPP!
Answer:
27 units
Step-by-step explanation:
To find the volume you do length x width x height. 3 x 3 x 3 is 27.
Find the area of the parallelogram, I will give brainliest
15cm 8cm
[?] square centimeters
Answer:
120 cm^2
Step-by-step explanation:
15*8; You can basiclly move the left edge to fill in the right part and it will become a normal rectangle. Then you can just do lenght*width
Answer:
120 Square centimeters
Step-by-step explanation:
A = bh = 15×8 = 120
i need help with algebra need asap
i really need help before 7 am
Answer:
A. is 2.
B. is 5.
C. is 1.
D. is 4.
E. is 6.
F. is 3.
Explaination for my answer
Its bascially just rearrange to make x =
José is driving on a highway. The equation d
55t relates the
number of miles d and the amount of time in hours t. About how
many hours does José spend driving 100 mi?
Answer:
it takes José an 1.18181818 hours
Step-by-step explanation:
since d is miles you replace the d in the equation with 100
so: 100=55t
divide both sides by 55
1.18181818=t
Math problem 50 points
Answer:
Start with 1st one
Step-by-step explanation:
1-1st one
2-3rd one
3-7th one
4-2nd one
5-6th one
6-4th one
7-5th one
8-8th one
Answer: u said 50
Step-by-step explanation: acd
Find the domain of the rational function below.
f(x)=(x+2)(x-1)/(x-3)(x+2)
Answer:
Domain: { x ∈ R | x ≠ -2, 3 }
Step-by-step explanation:
[tex]f(x)=\dfrac{(x+2)(x-1)}{(x-3)(x+2)}[/tex]
The domain (x-values) of a rational function is all real numbers of x with the exception of those for which the denominator is 0. Therefore, to find the values of x that need to be excluded from the domain, equate the denominator to zero and solve for x.
The denominator for the given function is [tex](x - 3)(x + 2)[/tex]
[tex]\implies (x - 3)(x + 2)=0[/tex]
[tex]\implies (x - 3)=0\implies x=3[/tex]
[tex]\implies (x + 2)=0 \implies x=-2[/tex]
There will be a hole at x = -2 and an asymptote at x = 3.
So the values of x that need to be excluded from the domain are:
x = 3 and x = -2
Therefore, the domain of the given rational function is: { x ∈ R | x ≠ -2, 3 }
Samantha is creating concrete spheres for a weight-lifting competition. One of the spheres needs to have a weight of 350 pounds. Samantha knows that concrete weighs 150 pounds per cubic foot. What is the radius, in feet, of the sphere that Samantha will create?
Answer:200
Step-by-step explanation:
Lucas owns a car dealership in Brazil that is having a big sale for the next 3 days. Lucas's car dealership will
lose revenue if it rains because potential customers will stay at home. There is a 50% chance of rain each
of the next 3 days independent of the other days. The table below shows Lucas's potential revenue for his dealership's big sale depending on how many days it rains. What is Lucas's car dealerships' expected revenue over the next 3 days?
Lucas's car dealerships' expected revenue over the next 3 days is $6800
How to determine the expected revenue?The expected revenue is calculated using the following formula of expected value
[tex]E(x) = \sum x * P(x)[/tex]
The data elements on the table are represented as:
Days Revenue
0 3000
1 1800
2 1300
3 800
So, we have:
E(x) = 0 * 3000 + 1 * 1800 + 2 * 1300 + 3 * 800
Evaluate the sum of the products
E(x) = 6800
Hence, Lucas's expected revenue is $6800
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#SPJ1
"pyramid = 4
prism = 3
prism = 3
= 3
Wprism
What is the volume of this solid?
O A. 63
O B. 10
O c. 27
O D. 39
Answer:
Find the cube's volume first (because it's the simplest figure) by using the formula;
(Formula for vol. of cube)
V = [tex]s^{3}[/tex]
Where 's' stands for one side of the cube raised to the power of three.
or
V = w · l · h
Where 'w' stands for the width, 'l' stands for the length, and 'h' stands for the height.
Plug in the values you know since they literally give it to you (I'll be using the formula [tex]s^{3}[/tex]);
V = [tex]s^{3}[/tex]
V = 3^3 → (The symbol ' ^ ' means to the power of.)
V = 27, is the volume of the cube.
Now we find the volume of the pyramid using the formula;
(Formula for vol. of pyramid)
V = (l · w · h) · 1/3
Where 'l' means the length, 'w' the width, and 'h' the height whereas the 1/3 is just dividing the product of those three by 3.
Plug in the values you know using both the lengths from the cube and pyramid.
What we know of the dimensions for the cube:Length = 3
Width = 3
Height = 3(we won't use)
What we know of the dimensions for the pyramid:Height = 4
Use these to figure out the volume for the pyramid.
V = (l · w · h) · 1/3
V = (3 · 3 · 4) · 1/3
V = 36 · 1/3
V = 36/3
V = 12, is the volume of the pyramid.
Add your volumes:-
27(cube vol.) + 12(pyramid vol.)
= 39 is the volume for this whole solid, your answer is D.
How do geometric functions differ from algebraic functions?
Answer:
Geometric function deals with points, lines, varied-dimensional objects and shapes, surfaces, and solids in mathematics Whiles Algebra uses variables, in the forms of letters and symbols, to act as numbers or quantities in equations and formulas.
Find the value of x in the triangle shown below.
O
C =
3.5
4
xº
55°
3.5
Answer:
okay so the answer is 70°
Step-by-step explanation:
the triangle has two sides equal meaning its a scalene triangle. now bases scalene triangles have two angles equal. hence sum of angles in the triangle sum up to 180° please. rate. me brainliest. if I'm. right
[tex]55 + 55 + x = 180 \\ 110 + x = 180 \\ x = 180 - 110 \\ x = 70degrees[/tex]
Charlie cell phone cost $50 each month plus $0. 05 per text message. His budget is no more than $75 a month. How many text can be send?
Answer:
500
Step-by-step explanation:
let's say charlie sends x messages per month
he spends $50 + 0.05 for each x (message), which comes out to less than or equal to $75.
as an equation, this is
50 + 0.05 x ≤ 75
subtract both sides by 50 to isolate the variable and its coefficient
0.05 x ≤ 25
multiply both sides by 1/0.05 to isolate x
x ≤ 500
the maximum is therefore x = 500 messages
Gabrielle's emerald ring has a diameter of 14 millimeters. What is the ring's radius?
millimeters
Answer:
7 mm
Step-by-step explanation:
Formula
Radius = 1/2 x DiameterSolving
Diameter = 14 mmRadius = 1/2 x 14 mmRadius = 7 mmWhat is TU???? 24 points
Answer:
4
Step-by-step explanation:
Here we know that T is the midpoint of SU.
Therefore, we know ST and TU are equal.
Setting their values equal, we get:
x+3 = 4x
Then we isolate x by subracting x from both sides:
3=3x
Finally we divide by 3:
1=x
Now we can solve for TU:
4x= 4(1) = 4
39 The table shows a linear relationship between x and y.
X
y
96
-20
60
-12
-6
33
-2
15
What is the rate of change of y with respect to x?
А
9
2
을
B
2
9
.
с
2
9
IN
9
2
Answer:
For B it is A92B but for a
Step-by-step explanation:
I got it right on my test!
How much is the tax on a $30.00 shirt if the tax rate is 10%?
1. $3.00
2. $8.00
3. $15.00
1. $10.00
Answer:
3
Step-by-step explanation:
$30 dollars is the principal.
Percentage can be calculated by dividing the value by the total value, and then multiplying the result by 100. The formula used to calculate percentage is: (value/total value)×100%.
Juanita begins to factor an expression as shown. x2 3x−18=(x )(x−) what numbers should be placed in the boxes from left to right? 3 and 6 2 and 9 6 and 3 9 and 2
The numbers which should be placed in the boxes from left to right, when Juanita factor the expression, is 6 and 3 respectively.
What is a factor of polynomial?The factor of a polynomial is the terms in linear form, which are, when multiplied together, give the original polynomial equation as a result.
Juanita begins to factor an expression as shown.
[tex]x^2+ 3x-18=(x+ \;\;)(x-\;\;)[/tex]
To find the value of blank, we have to factor the left-hand side expression using the split the middle term method as,
[tex]x^2+ 3x-18\\x^2+ 6x-3x-18\\x(x+6)-3(x+6)\\(x+6)(x-3)[/tex]
Hence, the numbers which should be placed in the boxes from left to right, when Juanita factor the expression is 6 and 3 respectively.
Learn more about factor of polynomial here;
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Use the quadratic formula to solve the equation: 3x2−6x+1=0
Answer:
3x2-6x+1=0= 7/6
Step-by-step explanation:
3x2-6x+1=0
-6x=-7
than divide each term in -6x=-7 by -6 and simplify
x= 7/6
Answer:
x = 1.816 and 0.1835
Step-by-step explanation:
See attachment.
4.321 - 41
Please help me
answer is given above..........
A company makes several sizes of phones. For each size, the ratio of the height of the screen to its width is 18:9. Write an equation that shows how to find the height in inches of any of the company's phone screens based on the screen's width in inches. Show your work.
The equation which shows how to find the height in inches of based on the screen's width is; h=2w
What is the screen's height in terms of the screen's width?According to the taks content!
The ratio of the height of the screen to its width is 18:9.
On this note, it follows that;
h/w = 18/9
By making the h the subject of the formula;
h = 18w/9
h = 2w.
Read more on ratios;
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175 miles in 4 hours in unit rate pls help me
Can someone give a good explanation?
Answer:
$2.3
Step-by-step explanation:
they bought hot dogs for $6.35
and french fries for. $3.90. +
they got two mugs of tea $1.40
the tax fee. $1.05
=$12.7
:.,total amount $15.00-$12.7=$2.3 remaining
Which equation describes this line?
Answer:
y=2x+4
Step-by-step explanation:
**Your line isn't clearly shown on point with the grid**
If you want this in the slope-intercept form then here it is:
Slope-intercept formula: y=mx+b
Your coordinates: (-3,2) and (1,10)
To find the slope (which is the "m" in the formula) you need to do this formula:
y2 - y1 / x2 - x1 =
(The 2's and 1's should be subscript)
10-2/1-(-3) = 8/4
8/4=2
The slope should be 2
Formula right now: y=2x+b
You need to find the y-intercept:
That should be a point on the y-axis.
(0,n) **N is used for a variable since we don't have a number yet.
In your coordinate plane, (0,4) is your y-intercept.
When writing the y-intercept in the formula don't write a coordinate write the "y"
Formula: y=2x+4
Cindy puts two different-sized weights on a scale. One size weighs 2 ounces and the other size weighs 5 ounces. All of the weights on the scale
weigh 50 ounces combined.
Create an equation to model a possible number of 2-ounceweights, x, and 5-ounce weights, y, that are on the scale
Answer: 2x+5y=50
Step-by-step explanation:
x=number of 2-ounce weights
y=number of 5-ounce weights
Because of this you will write the total weight (50) is equal to __. On the other end you will multiply the possible number of 2-ounce weights to 2 because this will give you the weight for the 2 ounce. The same is done for the 5-ounce weights. Once you combine both of them you would get the total weight. Which is why 2x+5y=50 is the answer.