Solve the problem.Suppose that for a particular brand of computer, the average lifespan is 90 months with a standard deviation of 9 months. If a computer lasts for 95 months, what is the z-score for the lifespan of the computer?
A. 0.71
B. 0.56
C. 0.61
D. 0.81
Answer: B
Mathematics
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Solve the problem.If two cards are drawn from a 52-card deck without replacement, in how many different ways is it possible to obtain a king on the first draw and a king on the second?
A. 12 B. 8 C. 2 D. 16
Mathematics
Subtract the real numbers. Write any improper fraction as a whole or mixed number where appropriate.
- 
A. 5
B. 
C. 
D. 
Mathematics
Answer the question appropriately.Explain how to construct a square given one diagonal and constructing only perpendicular lines. If it is not possible, explain why.
What will be an ideal response?
Mathematics
Translate to an equation. Do not solve.31.9 is what percent of 77?
A. 31.9% = p ? 77 B. 31.9 ? p = 77 C. 31.9 = p ? 77% D. 31.9 = p ? 77
Mathematics