Solve the problem.John (whose line of sight is 6 ft above horizontal) is trying to estimate the height of a tall oak tree. He first measures the angle of elevation from where he is standing as 35°. He walks 30 feet closer to the tree and finds that the angle of elevation has increased by 12°. Estimate the height of the tree rounded to the nearest whole number.
A. 90 ft
B. 86 ft
C. 61 ft
D. 67 ft
Answer: D
Mathematics
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Divide as indicated.
A. 8m - 2
B. 8m - 2 + 
C. 8m + 2
D. m - 2
Mathematics
Find the average of the set of numbers.5
and 8
A. 14
B. 6
C. 6
D. 7
Mathematics
Express the sum or difference as a product.sin 
+ sin 
A. 2 sin 
sin x
B. 2 cos 5x sin x
C. 2 sin 
cos x
D. 2 sin 5x
Mathematics
Solve the problem.An SUV weighing 4900 pounds is parked on a street which has an incline of 
Find the force required to keep the SUV from rolling down the hill and the force of the SUV perpendicular to the hill. Round the forces to the nearest hundredth.
A. 512.19 lb and 4873.16 lb B. 934.96 lb and 4809.97 lb C. 467.48 lb and 2404.99 lb D. 1350.62 lb and 4710.18 lb
Mathematics