Solve the problem.A ladder is resting against a wall. The top of the ladder touches the wall at a height of 6 ft. Find the length of the ladder if the length is 2 ft more than its distance from the wall.
A. 6 ft
B. 8 ft
C. 12 ft
D. 10 ft
Answer: D
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Solve the problem.A BASE jumper's velocity (in meters per second) after t seconds is given by 
where m is the mass of the object in kilograms, g = 9.8 m/s2 is the acceleration due to gravity, and k is a physical constant. How fast is the BASE jumper falling at the end of a 11 second delay? Use 
and 
Round the answer to one decimal place if necessary.
A. 629.8 m/s B. 18.9 m/s C. 64.2 m/s D. 57.3 m/s
Decide if the number is rational or irrational.0.22582259. . .
A. Rational B. Irrational
Solve the problem.If the life, in years, of a television set is normally distributed with a mean of 41 years and a standard deviation of 7 years, what should be the guarantee period if the company wants less than 3% of the television sets to fail while under warranty?
A. Less than 27.84 years B. Less than 21.75 years C. Less than 54.16 years D. More than 27.84 years
Solve the problem.A man has 9 shirts and 7 ties. How many different shirt and tie arrangements can he wear?
A. 49 B. 81 C. 63 D. 126