I'm assuming you meant to write 8^(-2) or
where the -2 is the exponent over the 8.
If my assumption is correct, then we use the rule 
So,

<h3>Answer: Choice D. 1/64</h3>
Answer:
56 degrees
Step-by-step explanation:
Answer:
I could help you, what are the questions you need help with? x
Step-by-step explanation:
-Emilie Xo
Answer:
As follows, (shortened)
Step-by-step explanation:
1.AB=CD (Given)
2.AB+BC=CD+BC ( By additive property, adding BC to both sides)
3.AB+BC=CD+DE (Given, BC=DE, By substitution property replacing BC by DE)
4.AC=CE(By segment addition, and substitution property)