Write the given exponential expression as repeated multiplication.-83
A. -(8 ? 8 ? 8)
B. (-8) ? (-8) ? (-8)
C. -((-8) ? (-8) ? (-8))
D. 3 ? (-8)
Answer: A
Mathematics
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Solve the problem.The variable z varies jointly as the 2.4 power of x and the 1.7 power of y. When 
and 
Approximate the constant of variation to three significant digits.
A. 4.70 B. 8.10 C. 6.20 D. 7.60
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Find the measure of the unknown angles. Figures are not drawn to scale.
Find the measure of ?x.
A. 139° B. 49° C. 149° D. 131°
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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
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Add or subtract as indicated. Simplify if necessary.
- 1
A. - 
B. 
C. - 
D. - 
Mathematics