1) 3n² + 5n +7

1 answer:

3 0

Answer:

Step-by-step explanation:

it is a quadratic trinomial

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Contact [7]

Boys bvarsity is wrong and so is Bastet

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alexgriva [62]

-10 or X=1.25

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LiRa [457]

I think it’s B because 3.14 times 12 is 37.68.

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andrey2020 [161]

If we're solving for x then x=12

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Maslowich

Answer:

Hello,

Step-by-step explanation:

Area of the sphere:

$S=4*\pi *r^2$

Volume of the sphere:

$V=\dfrac{4*\pi *r^3}{3}$

$\dfrac{S}{3} =\dfrac{V}{7} \\\\\dfrac{4*\pi *r^2}{3} =\dfrac{4*\pi *r^3}{3*7} \\\\1=\dfrac{r}{7} \\\\\\r=7\\\\great \ circle: 2*\pi* r=14*\pi\\$

$Volume=\dfrac{4*\pi *7^3}{3} =\dfrac{1372*\pi }{3} \approx{1436,7550...(cm^3)}$

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3 years ago