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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Use the change of base formula and a calculator to evaluate the logarithm. Round your answer to two decimal places.log2/319
A. 8.92 B. -14.52 C. -7.26 D. 7.26
Mathematics
Solve the quadratic inequality by sketching the graph of the corresponding quadratic function.x2 - 9x + 8 < 0
A. Solution: [1, 8]
B. Solution: (1, 8)
C. Solution: (-?, 1) ? (8, ?)
D. Solution: ?
Mathematics
Divide.
A. 0.201 B. 1.201 C. 12.01 D. 2.01
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Use the vectors in the figure below to graph the following vector. 
2u - z - w 
A. 
B. 
C. 
D. 
Mathematics