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13 March, 10:01

Simplify 9 to the 2nd over 9 to the 7th.

a 95

b 1 over 9 to the 9th

c 1 over 9 to the negative 5th

d 1 over 9 to the 5th

+1
Answers (2)
  1. 13 March, 10:25
    0
    The answer is 1. 9 over 9 is a whole, which is one. 1 to the second power is 1. 1 to the 7th power is 1. No matter how many exponents you put on 1, it will always stay one. So the answer is 1.
  2. 13 March, 13:57
    0
    9^2/9^7

    when dividing powers, we subtract the exponents

    9^ (2-7)

    9^ (-5)

    a negative exponent flips from the numerator to the denominator

    1 / 9^5

    Choice D
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