Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20
B. 100
C. 10
D. 500
Answer: C
Mathematics
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A. x = 9, y = 4 B. x = -1, y = -1 C. Dependent D. Inconsistent
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Solve the equation symbolically.log9 x = 
A. x = 
B. x = 91/2
C. x = 
D. x = (1/2)9
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Solve the problem.Determine a polynomial that represents the area of the figure.
3x + 4
A. 9x2 + 24x - 16 B. 9x2 - 16 C. 9x2 - 24x + 16 D. 9x2 + 16
Mathematics
Express the fraction or mixed number as a percent.
A. 120% B. 15% C. 150% D. 125%
Mathematics