Find the mean. If necessary, round to one decimal place.16, 8, 21, 16
A. 23
B. 15.3
C. 15.8
D. 13.8
Answer: B
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If the number given is a mixed number, convert it to a fraction. If the number is given as a fraction, convert it to a mixed number.
A. 
B. 
C. 
D. 
Solve the problem.A circular pool measures 8 feet across. One cubic yard of concrete is to be used to create a circular border of uniform width around the pool. If the border is to have a depth of 
, how wide will the border be? Use 3.14 to approximate ?. Express your solution rounded to two decimal places. (1 cubic yard = 27 cubic feet)
A. 8.37 ft B. 3.1 ft C. 5.43 ft D. 2.88 ft
Perform the matrix operation. 
+ 
=
A. 
B. 
C. 
D. 
Solve the problem.Find two numbers x and y such that x + y = 60 and xy2 is maximized.
A. x = 20 and y = 40 B. x = 30 and y = 30 C. x = 1 and y = 59 D. x = 15 and y = 45