Solve the problem.Solve S = 
?r2 + (r + 8)h for r.
A. r = 
B. r = 
C. r = 
D. r = 
Answer: A
Mathematics
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Use a power-reducing identity to find the exact value of the expression.tan2 (-165°)
A. 
B. 7 + 4
C. 3
D. 7 - 4
Mathematics
Identify the vertex of the given parabola.f(x) = -2x2
A. 
B. 
C. 
D. 
Mathematics
Find the area.
A. 15 in.2 B. 25 in.2 C. 100 in.2 D. 50 in.2
Mathematics
Sketch the right triangle and find the length of the side not given. If necessary, approximate the length to the nearest thousandth.leg = 2, leg = 7
A. 14 B. 4.243 C. 9 D. 7.28
Mathematics