Suppose the average waiting time for a customer's call to be answered by a company representative (modeled by exponentially decreasing probability density functions) is 20 minutes. Find the median waiting time.

a. 13.86 minutes
b. 17.86 minutes
c. 15.86 minutes
d. 16.86 minutes
e. 14.86 minutes


a. 13.86 minutes

Mathematics

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Decide whether the statement is compound.21 + 37 ? 54

A. Not compound B. Compound

Mathematics

Classify the polynomial as constant, linear, quadratic, cubic, or quartic, and determine the leading term, the leading coefficient, and the degree of the polynomial.g(x) = 305x2 + 4517x3

A. Quadratic; 305x2; 305; 2 B. Cubic; 4517x3; 4517; 3 C. Quadratic; 4517x2; 4517; 2 D. Cubic; x3; 4517; 3

Mathematics

Use De Moivre's theorem to evaluate the expression. Write the result in standard form.(2 - 2i)5

A. -64 + 64i
B. - + i
C. -64 + 64i
D. -128 + 128i

Mathematics

Use a graphing calculator to solve the nonlinear system. Give x- and y-coordinates to the nearest hundredth.y = x2 + y2 = 5.7

A. {(-1.50, 1.86), (1.84, 1.52)} B. {(-1.84, -1.52), (1.50, -1.86)} C. {(-1.50, -1.86), (1.84, -1.52)} D. {(-1.84, 1.52), (1.50, 1.86)}

Mathematics