3 years ago

Help me please I have no idea

Mathematics

1 answer:

Maru [420]3 years ago

8 0

Still need help if so i’ll help you ?

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svp [43]

Orange = sphere

S.A of sphere

= 4πr²

= 4 × π × r × r

$= 4 \times \pi\times 3 \times 3$

$= 36\pi$

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Rudiy27

Answer:

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Step-by-step explanation:

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4 years ago

..............................................................

nadezda [96]

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Step-by-step explanation:

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What are the zeroes of the polynomial function f(x)=x^3+2x^2-x-2

MatroZZZ [7]

$f(x)=x^3+2x^2-x-2\\\\f(x)=0\iff x^3+2x^2-x-2=0\\\\x^2(x+2)-1(x+2)=0\\\\(x+2)(x^2-1)=0\iff x+2=0\ \vee\ x^2-1=0\\\\x+2=0\qquad\text{subtract 2 from both sides}\\\\\boxed{x=-2}\\\\x^2-1=0\qquad\text{add 1 to both sides}\\\\x^2=1\to x=\pm\sqrt1\\\\\boxed{x=-1\ \vee\ x=1}\\\\Answer:\ -2,\ -1,\ 1$

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Help me please I have no idea​

Help me please I have no idea