Determine the work done by a crane lifting a 2,800-pound car 7 feet.
A. 19,600 ft-lb
B. 19,620 ft-lb
C. 19,610 ft-lb
D. 19,640 ft-lb
E. 19,630 ft-lb
Answer: A
Mathematics
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Solve.When fifteen is reduced by one-third of a number, the result is 9. Find the number.
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Suppose that the functions f and g and their derivatives with respect to x have the following values at the given values of x. Find the derivative with respect to x of the given combination at the given value of x.
1/g2(x), x = 4
A. 
B. - 
C. 
D. - 
Mathematics
Use < or > for ? to write a true sentence. Draw a number line if necessary.0 ? 41
A. < B. >
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Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
Mathematics