The following stem-and-leaf plot gives the heights of the 20 highest mountains in two continents. Use the plots to answer the question. 
For which of the two continents is there a smaller range of heights in its 20 highest mountains?
A. Continent Y
B. Continent X
Answer: A
Mathematics
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Find the gradient field F of the function f.f(x, y, z) = (x7y2 - y5z3)e-z2
A. F = 7x6y2e-z2i + (2x7y - 5y4z3)e-z2j + (3 - 2z2)y5z2e-z2k B. F = 7x6y2e-z2i + (2x7y - 5y4z3)e-z2j + y2ze- z2[y3z(2z2 - 3) - 2x7]k C. F = 7x6i + (5y4 - 2y)j + 2z4e-z2k D. F = 7x6y2i + (5y4z3 - 2x7y)j + (2z2 - 3)y5z2k
Mathematics
List the factors of the number.42
A. 1, 2, 3, 6, 7, 14, 28, 42 B. 1, 7, 6, 42 C. 7, 6, 14, 42 D. 1, 2, 3, 6, 7, 14, 21, 42
Mathematics
Sketch the graph of the function.
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?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics
Solve the problem. Round to the nearest cent.A computer is on sale for 20% off. If the discount amount is $313.04, then what is the initial price?
A. $2565.21 B. $3065.21 C. $1065.21 D. $1565.20
Mathematics