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 = 7e-x2, y = 0, x = 0, x = 1
A. 7(e - 1) ?
B. 14
?
C. 7
?
D. 14
?
Answer: C
Mathematics
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Sides in pair of figures are proportional. Find missing length(s).
A. x = 3, y = 4 B. x = 2, y = 4 C. x = 2, y = 3 D. x = 4, y = 6
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Find the product or quotient, using trigonometric form. Write the answer in the form a + bi.
A. 
+ 
i
B. 
- 
i
C. - 
- 
i
D. - 
- 
i
Mathematics
Simplify the radical expression. Assume all variables represent positive real numbers.9
- 3
A. 6
B. -27
C. 6
D. 12
Mathematics
Solve the problem.The cost in millions of dollars for a company to manufacture x thousand automobiles is given by the function C(x) = 5x2 - 40x + 144. Find the number of automobiles that must be produced to minimize the cost.
A. 20 thousand automobiles B. 64 thousand automobiles C. 8 thousand automobiles D. 4 thousand automobiles
Mathematics