Solve the problem.If sin ? = 
, find csc ?.
A. 7
B. 
C. - 
D. undefined
Answer: A
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As part of a study, 800 college football players are randomly chosen and their weights taken. The distribution of the weights is approximately normal. The average weight is 235 pounds and the standard deviation is 25 pounds.Approximately how many players had weights with standardized values between 1 and 2?
A. 216 B. 400 C. 432 D. 108 E. none of these
Solve.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 72 watches B. 30 watches C. 36 watches D. 27 watches
Find the exact value of s in the given interval that has the given circular function value.
; tan s = - 
A. s = 
B. s = 
C. s = 
D. s = 
Tell whether the relation is reflexive, symmetric, or transitive on the set of subsets of a nonempty set. Also tell whether the relation is an equivalence relation."Is the complement of"
A. None; not an equivalence relation B. Symmetric and transitive; not an equivalence relation C. Reflexive; not an equivalence relation D. Symmetric; not an equivalence relation