Find the mean, median, mode, and midrange for the given data. Round to the nearest tenth if necessary.89, 86, 75, 72, 93, 89, 89, 86, 72, 93, 89, 75, 94, 72, 89, 89, 75, 86, 72, 89
A. mean = 83.7, median = 86, mode = 89, midrange = 83
B. mean = 83.7, median = 87.5, mode = 89, midrange = 83
C. mean = 83.7, median = 87.5, mode = 89, midrange = 22
D. mean = 84.2, median = 86, mode = 94, midrange = 22
Answer: B
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Find the eccentricity of the ellipse.4x2 + y2 = 36
A. 
B. 
C. 
D. 
Solve the problem. Round your answer, if appropriate.Boyle's law states that if the temperature of a gas remains constant, then PV = c, where 
, 
, and c is a constant. Given a quantity of gas at constant temperature, if V is decreasing at a rate of 13 in. 3/sec, at what rate is P increasing when P = 70 lb/in.2 and V = 50 in.3? (Do not round your answer.)
A. 
lb/in.2 per sec
B. 
lb/in.2 per sec
C. 
lb/in.2 per sec
D. 
lb/in.2 per sec
Find the weighted mean. Round to the nearest tenth.
A. 285.6 B. 321.3 C. 91.1 D. 247.3
Perform the indicated operation and write the answer in simplest form.- 
÷ - 
A. - 
B. 
C. 
D. - 