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 = 2ex2, y = 0, x = 0, x = 1
A. 4(e - 1) ?
B. 4e ?
C. 2(e - 1) ?
D. 1(e - 1) ?
Answer: C
Mathematics
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Solve the problem.Find the centroid of the first-octant portion of a solid ball of radius 2 centered at the origin.
A. (
, 
, 
) = 
B. (
, 
, 
) = 
C. (
, 
, 
) = 
D. (
, 
, 
) = 
Mathematics
Use the graph to evaluate the limit.
f(x)
A. ? B. 1 C. does not exist D. -1
Mathematics
The argument has a true conclusion. Identify the argument as valid or invalid.A square is a parallelogram.A square has four sides. A parallelogram has four sides.
A. Valid B. Invalid
Mathematics
Use the bar graph to answer the question.The bar graph illustrates the number of minutes of cell phone usage during selected months. How many more minutes were used during the month of April than during March?
A. 12 B. 17 C. 3 D. 1
Mathematics