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1 answer:
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Answer with positive exponent = or
Answer with negative exponent =
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Explanation:
The rule we use is
If we multiply two exponential expressions with the same base, then we add the exponents.
The base for each is 5. The exponents 4 and -7 add to -3.
This means
To convert to a positive exponent, we apply the reciprocal to the base. We go from 5, aka 5/1, to 1/5.
So,
<h3>Answer: Choice C</h3>
The base 16 is the same as 4*4.
From there, the rule is used to get
Afterward, the exponents are added getting 1/2+1/2 = 2/2 = 1. The rule is which only works if the bases are both the same.