If a tree casts a shadow of 11 ft at the same time that a 6-ft person casts a shadow of 2 ft, find the height of the tree (to the nearest foot).
?
A. 33 ft
B. 6 ft
C. 2 ft
D. 17 ft
E. 11 ft
Answer: A
Mathematics
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Choose the graph that matches the function. f(x) = -3x + 4
A. 
B. 
C. 
D. 
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Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(s, t), y = h(s, t), z = k(s)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
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Sketch a typical level surface for the function.f(x, y, z) = x - y2 - z2
A. 
B. 
C. 
D. 
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Add or subtract. Write the answer in lowest terms.
- 
A. 
B. 
C. 
D. 9
Mathematics