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BaLLatris [955]
3 years ago
8

Rewrite the expression in the form 9^n (9^3) (9^12)

Mathematics
1 answer:
BartSMP [9]3 years ago
5 0

Answer:

{9}^{15}

Step-by-step explanation:

( {9}^{3} ) \times ( {9}^{12} ) = 9 {}^{3 + 12}  =  {9}^{15}  \\

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patriot [66]

Answer:

The shaded are is 113\ mm^{2}

Step-by-step explanation:

we know that

The shaded area is equal to the area of the semicircle minus the area of the circle inside the semicircle

step 1

Find the area of semicircle

The area of semicircle is equal to

A=\frac{1}{2}\pi r^{2}

where

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substitute

A=\frac{1}{2}\pi(12)^{2}=72\pi\ mm^{2}

step 2

Find the area of the circle inside the semicircle

The area of circle is equal to

A=\pi r^{2}

where

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substitute

A=\pi(6)^{2}=36\pi\ mm^{2}

step 3

Find the shaded area

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assume

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3 significant figures is

113\ mm^{2}

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