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3 years ago

4x + 3y =4 2x - y =7 in substitution

Mathematics

1 answer:

IRINA_888 [86]3 years ago

4 0

The answer is (4x+3y=4 2x-7=7: 5/2 and y=-2) hope it helps and have a good day!

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Find Radius :
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$\text {Volume of a sphere =} \dfrac{4}{3} \pi r^3$

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$\pi r^3 = 140 \times \dfrac{3}{4}$

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$r = 3.22 \ cm$

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Find volume of the cylinder :
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$\text {Volume of the cylinder = } \pi r^2h$

$\text {Volume of the cylinder = } \pi ((3.22)^2(3.22 \times 2)$

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Find volume of the gap :
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$\text {Volume of gap = } 209.77 - 140$

$\text {Volume of gap = } 69.77 \ cm^3$

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$\bf \text {Answer : } 69.77 \cm^3$
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