Find the correlation coefficient.The following are costs of advertising (in thousands of dollars) and the number of products sold (in thousands): 

A. 0.6112
B. -0.3707
C. 0.2635
D. 0.6756

Answer: A

Mathematics

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Solve the problem.A vertical right circular cylindrical tank measures  high and diameter. It is full of oil weighing . How much work does it take to pump the oil to the level of the top of the tank? Give your answer to the nearest ft ? lb.

A. 1,642,173 ft ? lb B. 27,370 ft ? lb C. 3,284,347 ft ? lb D. 6,568,693 ft ? lb

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Mathematics

Provide an appropriate response.Is dx = x2(5x + 4)4 + C?

A. Yes B. No

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Mathematics

Solve the problem.The position (in centimeters) of an object oscillating up and down at the end of a spring is given by  at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. How fast is the object accelerating when it is accelerating the fastest?

A. A cm/sec2
B. A cm/sec2
C.  cm/sec2
D. A2 cm/sec2

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Mathematics

Write the statements S1, S2, and S3 and determine if each statement is true.Sn: 1 ? 2 + 2 ? 3 + 3 ? 4 + . . . + n(n + 1) = 

What will be an ideal response?

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Mathematics