21. answer the question by using the information in the picture

Mathematics

1 answer:

Dominik [7]3 years ago

8 0

Answer:

Step-by-step explanation:

Volume of a cone is (1/3)πr^2h.

You have the necessary info, so just plug it in. (1/3)*π*(3/2)^2*(9/4)

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Help help answer asap will give brainliest 25 points pls pls

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Step by step:
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If x= 1/2-√3 , prove that x³-2x²-7x+5=3

prohojiy [21]

$x=\frac{1}{2}-\sqrt3\\\\x^3-2x^2-7x+5=3\\\\(\frac{1}{2}-\sqrt3)^3-2(\frac{1}{2}-\sqrt3)^2-7(\frac{1}{2}-\sqrt3)+5\\\\=(\frac{1}{2})^3-3\cdot(\frac{1}{2})^2\cdto\sqrt3+3\cdot\frac{1}{2}\cdot(\sqrt3)^2-(\sqrt3)^3-...\\\\...-2[(\frac{1}{2})^2-2\cdot\frac{1}{2}\cdot\sqrt3+(\sqrt3)^2]-\frac{7}{2}+7\sqrt3+5$

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3 years ago

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Answer:

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21. answer the question by using the information in the picture​

21. answer the question by using the information in the picture