2(z-10)=-4
2z-20=-4
2z=16
z=8
The 4's will cancel out, then we have to get rid of the sqrt(16) on the bottom
sqrt(15) / sqrt(16)
sqrt(16) = 4
final answer = sqrt(15) / 4.
the answer is C
Your first step is C. Find a common denominator
Answer:
75
Step-by-step explanation: