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3 years ago

I need help with number 8 ASAP

Mathematics

2 answers:

WARRIOR [948]3 years ago

5 0

Answer:

C. 24,429 is the answer

Step-by-step explanation:

formula for volume of a sphere is V=4/3*π*r^3

r=18

r^3=5832

I used 3.14 for pie and just multiplied all that together

hope this helps

comment for more

Free_Kalibri [48]3 years ago

4 0

Answer:

Step-by-step explanation:

diameter = 36 in

Radius = 36/2 = 18 in

Volume of beach ball = $\frac{4}{3}\pi r^{3}$

$=\frac{4}{3}*3.1428*18*18*18\\\\=4 * 3.1428*3*18*18$

= 24,429 in³

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What is the y value in the solution to this system of linear equations?

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Answer:

The y-value is -20

Step-by-step explanation:

So let's solve this by Elimination method;

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3 years ago

Solve by elimination -5x+8y=-27 -8x+7y=-20

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Answer:

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Step-by-step explanation by elimination:

Solve the following system:

{8 y - 5 x = -27 | (equation 1)

7 y - 8 x = -20 | (equation 2)

Swap equation 1 with equation 2:

{-(8 x) + 7 y = -20 | (equation 1)

-(5 x) + 8 y = -27 | (equation 2)

Subtract 5/8 × (equation 1) from equation 2:

{-(8 x) + 7 y = -20 | (equation 1)

0 x+(29 y)/8 = (-29)/2 | (equation 2)

Multiply equation 2 by 8/29:

{-(8 x) + 7 y = -20 | (equation 1)

0 x+y = -4 | (equation 2)

Subtract 7 × (equation 2) from equation 1:

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0 x+y = -4 | (equation 2)

Divide equation 1 by -8:

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0 x+y = -4 | (equation 2)

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3 years ago

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Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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