Solve the problem.A formula used to determine the velocity v in feet per second of an object (neglecting air resistance) after it has fallen a certain height is 
where g is the acceleration due to gravity and h is the height the object has fallen. If the acceleration g due to gravity on Earth is approximately 32 feet per second, find the velocity of a bowling ball after it has fallen 70 feet. Round to the nearest tenth.
A. 4480 ft per sec
B. 66.9 ft per sec
C. 11.8 ft per sec
D. 47.3 ft per sec
Answer: B
Mathematics
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How many subsets and proper subsets are in the given set?the set of words describing the colors on a stoplight
A. 16, 15 B. 8, 7 C. 7, 8 D. 15, 16
Mathematics
Find all specified roots.Fifth roots of 1.
A. 1, cis 
, cis 
, cis 
, cis 
B. 1, cis 
, cis 
, cis 
, cis 
C. 1, cis 
, cis 
, cis 
,-1
D. -1, cis 
, cis 
, cis 
, cis 
Mathematics
Solve the problem.The formula 
gives the relationship between F degrees Fahrenheit and C degrees Celsius. Find the Celsius temperature that is equivalent to 168.8°F.
A. 76°C B. 76.5°C C. 60°C D. 62°C
Mathematics
Write the expression as a pure imaginary number.- 
A. -2
B. 2
C. 2
i
D. -2
i
Mathematics