Solve.The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 2.25 lb when the masses are 4 ft apart, what is the attraction when the masses are 6 ft apart?
A. 4 lb
B. 1 lb
C. 3 lb
D. 2 lb
Answer: B
Mathematics
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Solve the problem.The length of a rectangular room is 5 feet longer than twice its width. Its perimeter is 178 feet. Find the dimensions of the room (length and width).
A. width: 33 ft; length: 71 ft B. width: 28 ft; length: 61 ft C. width: 56 ft; length: 122 ft D. width: 42 ft; length: 47 ft
Mathematics
Decide whether the given number is a solution to the equation preceding it.(x - 6)2 = 25; -11
A. No B. Yes
Mathematics
Solve. Graph the solution on a number line, and express it in interval notation.-2x < 
A. x > - 
, 
B. x < 
, 
C. x < 
, 
D. x > 
, 
Mathematics
Reduce to lowest terms.
A. 
B. 
C. 
D. 
Mathematics