Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the y-axis.y = 7x, y = - , x = 1

A. ?
B. ?
C. ?
D. 50?


Answer: B

Mathematics

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Solve the equation by the method of your choice. Simplify irrational solutions, if possible.3x2 = 4x + 7

A.
B.
C.
D.

Mathematics

Solve the problem.Find the range and the standard deviation of the following voltages (in volts) of a sample of watch batteries: 1.212, 1.199, 1.201, 1.202, 1.199, 1.198.

A. Range = 0.014 V; standard deviation = 0.0040 V B. Range = 0.013 V; standard deviation = 0.0039 V C. Range = 0.013 V; standard deviation = 0.0040 V D. Range = 0.014 V; standard deviation = 0.0052 V

Mathematics

Solve the problem.A new car dealership sold 270 cars in 2010, and sales are increasing by about 58 cars per year. Let s be the number of cars sold in the year that is t years since 2010. Find an equation for a linear model to describe this situation. Then solve that equation for t.

A. t = 
B. t = 
C. t = 
D. t = 

Mathematics

Consider the set  of natural numbers and an operation  which means select the first of the two. That is,

? ? Is  associative for ? Answer yes or no. What will be an ideal response?

Mathematics