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. 86 ft
C. 90 ft
D. 61 ft
Answer: A
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Solve the problem.How long does it take $1700 to double if it is invested at 5% interest, compounded monthly? Round your answer to the nearest tenth.
Fill in the blank(s) with the appropriate word(s).
Solve the equation.s - 1.3 = 2.1
A. 0.8 B. 3.1 C. 1 D. 3.4
Read and solve the following problem. Then write a paragraph describing the method you used to get your solution. Which problem-solving strategy(s) did you use and why?
Toothpicks can be arranged to form rows of rectangles as shown. How many
toothpicks are required to form a row with 30 rectangles in it?
Solve the problem.Find the surface area S of a right circular cylinder with radius 10 cm, and height 4 cm. Use 3.14 for ?. Round your answer to one decimal place.
A. 1256.0 cm2 B. 439.6 cm2 C. 753.6 cm2 D. 879.2 cm2