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2 years ago

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Mathematics

2 answers:

Helen [10]2 years ago

5 0

The answer is y=x+8. How I figured it out was by using each answer given and plugging x into the expression. Once doing that make sure that all of the answers you got for y match with the table given. Through trial and error, you should get the answer of y=x+8 because when you plug x into the equation, you get the same y as shown in the picture.

kkurt [141]2 years ago

3 0

Answer:

I believe the answer is y=x + 5

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Simplify: 4(2a+3)+5(a+3)

EleoNora [17]

Answer:

13a+27

Step-by-step explanation:

8a+12+5a+15= 13a+27

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3 years ago

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Katy invests a total of $30,500 in two accounts. The first account earned a rate of return of 15% (after a year). However, the s

uranmaximum [27]

Answer:

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Step-by-step explanation:

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3 years ago

The sphere below has a radius of 2.5 inches and an approximate volume of 65.42 cubic inches.

Stells [14]

Part a: The radius of the second sphere is 5 inches.

Part b: The volume of the second sphere is 523.33 in³

Part c; The radius of the third sphere is 1.875 inches.

Part d: The volume of the third sphere is 27.59 in³

Explanation:

Given that the radius of the sphere is 2.5 inches.

Part a: We need to determine the radius of the second sphere.

Given that the second sphere has twice the radius of the given sphere.

Radius of the second sphere = 2 × 2.5 = 5 inches

Thus, the radius of the second sphere is 5 inches.

Part b: we need to determine the volume of the second sphere.

The formula to find the volume of the sphere is given by

$V=\frac{4}{3} \pi r^3$

Substituting $\pi=3.14$ and $r=5$ , we get,

$V=\frac{4}{3} (3.14)(125)$

$V=\frac{1580}{3}$

$V=523.3333 \ in^3$

Rounding off to two decimal places, we have,

$V=523.33 \ in^3$

Thus, the volume of the second sphere is 523.33 in³

Part c: We need to determine the radius of the third sphere

Given that the third sphere has a diameter that is three-fourths of the diameter of the given sphere.

Hence, we have,

Diameter of the third sphere = $\frac{3}{4} (5)=3.75$

Radius of the third sphere = $\frac{3.75}{2} =1.875$

Thus, the radius of the third sphere is 1.875 inches

Part d: We need to determine the volume of the third sphere

The formula to find the volume of the sphere is given by

$V=\frac{4}{3} \pi r^3$

Substituting $\pi=3.14$ and $r=1.875$ , we get,

$V=\frac{4}{3} (3.14)(1.875)^3$

$V=\frac{4}{3} (3.14)(6.59)$

$V=27.5901 \ in^3$

Rounding off to two decimal places, we have,

$V=27.59 \ in^3$

Thus, the volume of the third sphere is 27.59 in³

4 0

3 years ago

PLEASE HELPPPPP ME, IVE BEEN STUCK ON THIS ONE!!..

lianna [129]

Answer:

C. 9 minutes 30 seconds

Step-by-step explanation:

well you could estimate it or just add 2.5 to 6.9 and you would get pretty close to the answer

Have a good day! :)

4 0

1 year ago

Ellen thinks that if a line has no slope, then it never touches the y-axis. Which line proves that her statement is incorrect?

Serggg [28]

Answer:

An horizontal line.

Step-by-step explanation:

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2 years ago

*click photo*

click photo