Solve and check.
= 8 - 
A. x = 6
B. x = 5
C. x = 
D. x = 
Answer: A
Mathematics
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Find the expected value.The following table gives the distribution of heights for female students at one U.S. college. 
Find the expected value of height for women at this college. Use the midpoint of each category, (for example use 58 for the 57-59 category). Use 74 for the 72 and over category.
A. 64.6 in. B. 64.2 in. C. 63.8 in. D. 65.0 in.
Mathematics
Evaluate the trigonometric function. Round your answer to four decimal places. (Be sure the calculator is set in the correct angle mode.) ? sec 0.21 ?
A. 1.5225 B. 1.1225 C. 1.4225 D. 1.0225 E. 1.3225
Mathematics
Write using exponents.pp qqqqq
A. (pq)10 B. (pq)7 C. 10pq D. p2q5
Mathematics
Rationalize numerator.
A. 
B. 
C. 
D. 
Mathematics