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3 years ago

Find the area of the polygon

Mathematics

1 answer:

zimovet [89]3 years ago

5 0

The area A is given in terms of the side length s, apothem a, and number of sides n as

... A = n·s·a/2

For the given dimensions, your octagon has an area of

... A = 8·4·4.8/2 = 76.8 . . . . units²

_____

We cannot see the instructions for rounding, so we leave that to you.

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0.81 repeating decimal into a fraction

Daniel [21]

Answer:81/100

Step-by-step explanation:

0.81

0.0 tenths

0.00 hunderts

5 0

3 years ago

Hey who can solve this

Galina-37 [17]

Answer:

I need help on that too help pls

Step-by-step explanation:

7 0

2 years ago

please help! functions and relations. f(x)= square root of x-4. find the inverse of f(x) and it’s domain.

likoan [24]

ANSWER:

$\:D.\text{ }f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge-4$

STEP-BY-STEP EXPLANATION:

We have the following equation:

$f(x)=\sqrt{x}-4$

The inverse is the following (we calculate it by replacing f(x) by x and x by f(x)):

$\begin{gathered} x=\sqrt{f^{-1}(x)}-4 \\ \\ \sqrt{f^{-1}(x)}=x+4 \\ \\ f^{-1}(x)=(x+4)^2 \end{gathered}$

The domain would be the range of the original equation, and it would be the range of values that f(x) could take, which was from -4 to positive infinity, that is, f(x) ≥ -4.

Therefore, the domain is x ≥ -4.

So the correct answer is D.

$\:f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge -4$

4 0

7 months ago

Simplify. (8 + 14m) + m O 8 + 15 m 23 m 9 + 14 m 22 m

olganol [36]

Answer:

Hi there!

Your answer is:

A) 8+15m

Step-by-step explanation:

Since we can't do anything within the parentheses, they go away.

8+14m+m

Combine like terms

8+15m

Hope this helps

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3 years ago

Which of these pairs are equal?

AVprozaik [17]

Answer: sin 33° and cos 57°

Step-by-step explanation:

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2 years ago