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 looking 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. 67 ft
C. 86 ft
D. 61 ft
Answer: B
Mathematics
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Find the circle's circumference or area, as requested. Use 3.14 as the approximate value of ?, and round your answer to the nearest tenth.Find the area of the circle.
A. 29.5 ft2 B. 69.4 ft2 C. 14.8 ft2 D. 17.3 ft2
Mathematics
Provide an appropriate response.Write the two steps used to identify the greater fraction when comparing two fractions.
What will be an ideal response?
Mathematics
Solve the problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
, where x is the number of watches repaired. What is his minimum cost?
A. $318 B. $254 C. $127 D. $159
Mathematics
Find the integral.
A. 
+ C
B. 
+ C
C. 
+ C
D. 
+ C
Mathematics