Answer:
A, 
Step-by-step explanation:
a^2 + b^2 = c^2
8^2 + b^2 = 9^2
64 + b^2 = 81
b^2 = 17
b = 
They have the same absolute value because all opposites have the same absolut value because they both are the same distance from zero
Answer:
Answer is C.
Step-by-step explanation:
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40.25 you add everything together then multiply by .6
Answer:
20% of the number 40 is 8