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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Multiply in the indicated base.
A. 21127 B. 20127 C. 22127 D. 21337
Mathematics
A formula is given along with the values of all but one of the variables in the formula. Find the value of the variable not given.A = 
(b + B)h; A = 93, b = 13, B = 18
A. 6 B. 62 C. 234 D. 15.5
Mathematics
Solve the linear programming problem.Maximize and minimize z = 13x - 17y subject to:x ? 0,
y ? 0,
4x + 5y ? 30,
4x + 3y ? 20,
x ? 5,
y ? 8.
A. maximum: -68.75; minimum: -102 B. maximum: -102; minimum: 0 C. maximum: 65; minimum: 0 D. maximum: 65; minimum: -102
Mathematics
Solve the problem.One number is 2 less than a second number. Twice the second number is 8 less than 5 times the first. Find the two numbers.
A. 3 and 5 B. 5 and 7 C. -6 and -4 D. 4 and 6
Mathematics