Answer:
51
Step-by-step explanation:
Once again use the pythogream therom where C is the hypotenuse.
Step-by-step explanation:
(a^-7)/a^10 = a^(-7-10) => B
Answer:
Yes
Step-by-step explanation:
Yes. They did exponents and grouping symbols first, then multiplication and division left to right. Addition came before multiplication and division because it was inside a grouping symbol.
Answer:
6 cm
Step-by-step explanation:
A = 1/2(b + 12)(4)
36 = 1/2(b + 12)(4)
72 = (b + 12)(4)
18 = b + 12
18 - 12 = b
6 = b
or
b = 6 cm
