Solve the problem.The life (in months) of an automobile battery has a probability density function defined by 
for x in 
Find the probability that the life of a randomly selected battery is greater than 7 years.
A. 0.2066
B. 0.0434
C. 0.8262
D. 0.1738
Answer: D
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?Which of the following lines are perpendicular? Assume that each line moves indefinitely in both directions. ?
A. ?Line A containing the points: (-4, 3), (3, -4) ; Line B containing the points: (2, 6) and (3,7). B. ?Line A containing the points: (-3,2), (3,0); Line B containing the points: (4,2) and (4,8). C. ?Line A containing the points: (-2,-2), (0,-2); Line B containing the points: (3,5) and (3,-2). D. ?a and c only E. ?a and b only
Solve the problem.A rectangular swimming pool has a parabolic drain plate at the bottom of the pool. The drain plate is shaped like the region between 
and the line 
from 
to 
The pool is 10 ft by 20 ft and 8 ft deep. If the pool is being filled at a rate of 
alt="" style="vertical-align: -4.0px;" /> what is the fluid force on the drain plate after 4 hours of filling? Round your answer to two decimal places if necessary. A. 153.92 lb B. 486.72 lb C. 76.96 lb D. 166.4 lb
Represent the shaded area in the figure group with a mixed number.
A. 3
B. 4
C. 1
D. 1
Decide if the given number is a solution to the given equation.3p + 4p - 3 = 11; 2
A. Yes B. No