If y varies inversely as x, find the inverse variation equation for the situation.y = 9 when x = 
A. y = 
B. y = 
C. y = 27x
D. y = 
Answer: D
Mathematics
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Find the least common denominator for the fractions in the list.
, 
, 
A. 90x5 B. 18x2 C. 45x20 D. 30x5
Mathematics
Add or subtract, as indicated. Assume that all variables represent positive real numbers.
+ 
A. 2
B. 9
C. 3
D. 
Mathematics
Solve the system by substitution.x = 3y + 7y = x - 5
A. (-4, -1) B. (-4, 1) C. (4, -1) D. (4, 1)
Mathematics
Factor completely.b2 - 30b + 225
A. (b + 15)2 B. (b + 15)(b - 15) C. (b - 15)2 D. Prime
Mathematics