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3 years ago

Please help. Will mark brainliest. Question 1 & 2:

Mathematics

1 answer:

Len [333]3 years ago

4 0

Answer:

see below

Step-by-step explanation:

f(x) when x =10

The part that applies when x=10 is x^2 +3

f(10) = 10^2 +3

= 100+3

= 103

f(x) when x =-10

The part that applies when x=-10 is none

There is no part that applies ins -10 < -3

We cannot find a solution since x is in any defined region

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Answer:

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Step-by-step explanation:

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3 years ago

Find the radius of a circle that has an area of 6.76 cm². Use it for pi.

Inessa05 [86]

Answer:

<h2>radius = 1.47 cm</h2>

Step-by-step explanation:

Area of a circle = πr²

where

r is the radius

From the question

Area = 6.76 cm²

To find the radius substitute the value of the area into the above formula and solve for the radius

That's

$6.76 = \pi \: {r}^{2}$

Divide both sides by π

We have

${r}^{2} = \frac{6.76}{\pi} \\ r = \sqrt{ \frac{6.76}{\pi} }$

r = 1.46689291

We have the final answer as

radius = 1.47 cm

Hope this helps you

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