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. 67 ft
B. 90 ft
C. 61 ft
D. 86 ft
Answer: A
Mathematics
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Simplify the expression. Assume all variables represent positive real numbers.(
+ 
)(
- 
)
A. 4
B. 20
C. 12 - 8
D. 12 + 2
Mathematics
Graph each set of numbers.
, 4, 
, -1
A. 
B. 
C. 
D. 
Mathematics
Use the properties of logarithms to find the value of the expression.Let logb A = 2 and logb B = -3. Find logb B2.
A. 4 B. 9 C. -6 D. -9
Mathematics
Add or subtract as indicated. You will need to simplify terms to identify like radicals.2
+ 2
A. ( 4x4)
B. 2x4 + 2
C. ( 2x4 + 2)
D. ( 2x + 2)
Mathematics