Use two equations in two variables to find the following integers:One integer is twice another. Their sum is 6.
A. 2, 4
B. 4, 8
C. 2, 8
D. 5, 1
E. no such integers exist
Answer: A
Mathematics
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A. r ' = - 
B. r ' = 
C. r ' = 
D. r ' = 
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Find a 95% confidence interval for the true population proportion.In a poll of 1618 adults, 35% said that they exercised regularly.
A. 33.8% to 36.2% B. 32.5% to 37.5% C. 34.9% to 35.1% D. 30.0% to 40.0%
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Perform the indicated operation.(-5)(-9)(5)
A. -40 B. -225 C. 45 D. 225
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Multiply.-8(-3)(4)
A. 96 B. 196 C. -96 D. 86
Mathematics