Solve the system of linear equations.
A. (3, 10)
B. No solution
C. (4, 10)
D. (4, 9)
Answer: D
Mathematics
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Solve the problem.Suppose that replacement times for washing machines are normally distributed with a mean of 8.6 years and a standard deviation of 1.7 years. Find the 82nd percentile.
A. 10.2 years B. 8.9 years C. 7.0 years D. 9.6 years
Mathematics
Solve this problem.A ladder is resting against a wall. The top of the ladder touches the wall at a height of 15 ft. Find the length of the ladder if the length is 5 ft more than its distance from the wall.
A. 20 ft B. 25 ft C. 15 ft D. 30 ft
Mathematics
Find the derivative of y with respect to the independent variable.y = (cos ?)
A. -
cos ? sin ?
B. -(cos ?)
-1 sin ?
C. 
(cos ?)
-1
D. -
(cos ?)
-1 sin ?
Mathematics