3 years ago

Which value is equivalent to 9^c x 9^-c A. 0 B. 1 C. 1/9^2C D. 9

Mathematics

1 answer:

AleksAgata [21]3 years ago

7 0

Answer:

Step-by-step explanation:

Using the rule of exponents

$a^{m}$ × $a^{n}$ = $a^{(m+n)}$

$a^{0}$ = 1

Given

$9^{c}$ × $9^{-c}$

= $9^{(c-c)}$

= $9^{0}$

= 1 → B

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To solve for x you have to bring the 12 to the other side

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Check:

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