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, 
A^2+ b^2= c^2
24^2+b^2=25^2
576+b^2=625
Sub 576
b^2= 49 b=7
Answer:
y≤−6. Everthing more or equal to -6 should be shaded. So like fro-6 to -10
Step-by-step explanation:
Multiply each term in 12y≤−3 by 2 to eliminate the fractions.
Answer:
b= 12
Step-by-step explanation:
3/b = 5/20
3/b = 1/4
b= 12
The answer is C!!! I really hope that this helps you