Solve.If y varies inversely as the square root of x, and y = 6 when x = 81, find y when x = 9.
A. 54
B. 
C. 18
D. 2
Answer: C
Mathematics
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Solve the problem.Find the sum of the series 
by expressing 
as a geometric series, differentiating both sides of the resulting equation with respect to x, and replacing x by 
.
A. 
B. 
C. 
D. 
Mathematics
Write the percent as a decimal.170%
A. 17 B. 0.17 C. 1.71 D. 1.7
Mathematics
Find the difference in elevation between the given highest and lowest points.
South America: Mt. Aconcagua, 6,960 meters, and Valdes Peninsula, -40 meters. A) 7,000 meters B) 6,990 meters C) 6,980 meters D) 7,030 meters E) 7,040 meters
Mathematics
Solve the problem.A garden is in the shape of a rectangle 24 feet long and 25 feet wide. If fencing costs $6 a foot, what will it cost to place fencing around the garden?
A. $294 B. $1176 C. $3600 D. $588
Mathematics