Find the value of the constant k so that the given function in a probability density function for a random variable over the specified interval. f(x) = kex over [0, 9]
A. 
B. 
C. e9 - 1
D. 
Answer: A
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Solve.Find the length of each side of the right triangle shown. 
A. 9, 12, 15 B. 12, 15, 18 C. 12, 16, 20 D. 6, 8, 10
Solve the problem.Find parametric equations for the normal line to the surface 
at the point 
A. 
B. 
C. 
D. 
Solve by factoring and using the principle of zero products.4x2 - 5x = 6
A. - 
, 2
B. - 
, 1
C. - 
, 0
D. - 
, -2
Find the indicated roots. Write the answer in trigonometric form.Cube roots of 125(cos 288° + i sin 288°)
A. 5(cos 96° + i sin 96°), 5(cos 216° + i sin 216°), 5(cos 336° + i sin 336°) B. 5(cos 186° + i sin 186°), 5(cos 246° + i sin 246°), 5(cos 126° + i sin 126°) C. 5(cos 96° + i sin 96°), 5(cos 216° + i sin 216°), 5(cos 216° + i sin 216°) D. 5(cos 96° + i sin 96°), 5(cos 156° + i sin 156°), 5(cos 36° + i sin 36°)