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nignag [31]
3 years ago
13

Please help me get the right answer?!

Mathematics
2 answers:
il63 [147K]3 years ago
5 0
Hi!

Let's put the value of x into the equation.

f(-2) = 9^{-2}
solve
f(-2) = 0.012345679

Now let's see if this is equal to any of the answers.

1/81 = 0.012345679 c<em>orrect</em>
81 = 0.012345679 <span><em>wrong</em>
</span>1/18 = 0.012345679 <em>wrong</em>
18 = 0.012345679 <em>wrong</em>

The answer is <span>A. 1/81 

Hope this helps! :)
</span>
Aleksandr-060686 [28]3 years ago
4 0
The answer is A, \frac{1}{81}. This is because when plugging in -2 for x, the expression will look like this: 9^{-2}. To make the exponent positive, you have to flip it into a fraction. Then it will be \frac{1}{9^2}. Lastly, you simplify the denominator into 81.
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3 years ago
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13 cups

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3 years ago
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Answer:

Step-by-step explanation:

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