Solve the problem.A tree casts a shadow 36 m long. At the same time, the shadow cast by a 49-centimeter tall statue is 90 cm long. Find the height of the tree. Round to the nearest tenth.
A. 66.1 m
B. 18.1 m
C. 19.6 m
D. 64.6 m
Answer: C
Mathematics
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Decide whether the figure is convex or not convex.
A. Not convex B. Convex
Mathematics
Solve the problem.A recipe calls for 
L of water and 
L of milk. If the recipe is halved, how much liquid will be needed?
A. 
L
B. 
L
C. 
L
D. 
L
Mathematics
Simplify the expression. Assume that all variables represent nonnegative real numbers.
+ 
+ 
+ 
A. 181
+ 15x
B. 
xy + 
+ 15x
C. 19
+ 
+ 
D. 19
+ 15x
Mathematics
Add or subtract by first simplifying each radical and then combining any like radical terms. Assume that all variables represent positive real numbers.
+ 6
- 2
A. 4
B. 4
C. 9
D. 9
Mathematics