Solve.If a tree 52.5 feet tall casts a shadow that is 21 feet long, find the height of a tree casting a shadow that is 5 feet long. Round to the nearest tenth of a foot, if necessary.
A. 36.5 ft
B. 220.5 ft
C. 2 ft
D. 12.5 ft
Answer: D
Mathematics
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Solve the problem.For what value of r does the infinite series 1 + 7r + r2 + 7r3 + r4 + 7r5 + r6 + ... converge?
A. |r| < 7
B. |r| < 
C. |r| < 
D. |r| < 1
Mathematics
Find the least common denominator.
- 
A. (x - 3)(x - 3) B. (x - 3)(x + 6) C. (x - 3)(x - 3)(x + 6) D. (x + 3)(x + 3)(x + 6)
Mathematics
Multiply or divide.
A. 5 B. -4 C. -5 D. -6
Mathematics
Express the statement as a formula. M varies directly as x and inversely as y Use the information that if x = 24 and y = -4 then M = 36 to find the constant of proportionality.
What will be an ideal response?
Mathematics