The following stem-and-leaf plot gives the heights of the 20 highest mountains in two continents. Use the plots to answer the question. 
Find the mean of the heights of the 20 highest mountains in Continent Y.
A. 19,720 feet
B. 19,050 feet
C. 18,840 feet
D. 18,900 feet
Answer: A
Mathematics
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Simplify. Your answer should be in lowest terms.- 
- 
A. - 
B. - 
C. - 
D. - 
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Rewrite as a radical expression and simplify if possible. Assume all variables represent nonnegative real numbers.(x3)8/3
A. x4 B. x9 C. x3 D. x8
Mathematics
Solve the problem.A reflecting telescope has a parabolic mirror for which the distance from the vertex to the focus is 35 feet. If the distance across the top of the mirror is 62 inches, how deep is the mirror in the center?
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Mathematics
Simplify the expression. Assume that all variables are positive.(x3)7/3
A. x4 B. x7 C. x8 D. x3
Mathematics