Solve the problem. Round results to an appropriate number of significant digits.The angle of elevation from a point on the ground to the top of a tree is 37.2°. The angle of elevation from a point 37.2 ft farther back to the top of the tree is 24.1°. Find the height of the tree.
A. 119.3 ft
B. 40.5 ft
C. 53.4 ft
D. 90.6 ft
Answer: B
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Graph the one-to-one function as a solid curve and its inverse as a dashed curve on the same axes.f(x) = 
x + 3 
A. 
B. 
C. 
D. 
For the given arithmetic series, what is Sn?a1 = 28, d = 1, and n = 31
A. 1333 B. 2666 C. 1361 D. 5332
Find the standard deviation for the given data.To get the best deal on a CD player, Tom called eight appliance stores and asked the cost of a specific model. The prices he was quoted are listed below: $384 $210 $175 $370 $307 $334 $436 $254Round results to the nearest ten cents.
A. $280.50 B. $90.10 C. $819,498.00 D. $762,612.50
Find zw or 
as specified. Leave your answer in polar form.z = 10(cos 45° + i sin 45°)w = 5(cos 15° + i sin 15°)Find 
.
A. 2(cos 45° + i sin 45°)
B. 
(cos 30° + i sin 30°)
C. 
(cos 45° + i sin 45°)
D. 2(cos 30° + i sin 30°)