At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:More than 15.2 seconds
A. 34%
B. 50%
C. 68%
D. 48%
Answer: B
Mathematics
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The polar coordinates of a point are given. Find the rectangular coordinates of the point.(7.7, 5.5) Round the rectangular coordinates to two decimal places.
A. (7.66, 0.74) B. (5.46, -5.43) C. (7.66, -0.74) D. (5.46, 5.43)
Mathematics
Solve the problem.Find the minimum possible value of g = 4x + 5y subject to the following constraints: 
A. 75 B. 33 C. 20 D. 39
Mathematics
Perform the indicated operation.
? 
A. 1
B. - 
C. -x
D. x
Mathematics
Decide whether the ordered pair is a solution of the given system.
A. No B. Yes
Mathematics