Solve the problem.If the life, in months, of a certain type of car battery is normally distributed with a mean of 86 months and a standard deviation of 8 months, what should be the guarantee period if the company wants less than 5% of the batteries to fail while under warranty?
A. Less than 99.2 months
B. Less than 17.74 months
C. Less than 72.8 months
D. Less than 65.36 months
Answer: C
Mathematics
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Simplify.
A. 20
B. -1
C. 
D. 
Mathematics
Find the volume of the rectangular solid or cube. 
A. 12 m3 B. 144 m3 C. 48 m3 D. 8 m3
Mathematics
Solve the problem.A rectangular plot has area 126 yd2 with a perimeter of 46 yd. What is the length of the longest side?
A. 16 yd B. 14 yd C. 12 yd D. 13 yd
Mathematics
Solve the system by graphing. y - 4x = 54y = 16x + 20
A. x = 1, y = 1 B. x = -1.5, y = -1 C. infinite number of solutions D. no solution
Mathematics