Solve.Assume that the period of a certain swing is given by the formula L = 0.49t2, where L is the length in feet of the swing and t is the time in seconds that the swing takes to swing back and forth. Solve this formula for t.
A. t = 
B. t = 
C. t = 
D. t = 
Answer: A
Mathematics
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Simplify.2(-4)(7 - 5) - 2
A. -14 B. -10 C. 14 D. -18
Mathematics
Solve the problem.Tim and Judy mix two kinds of feed for pedigreed dogs. They wish to make 54 pounds of feed worth $0.28 per pound by mixing one kind worth $0.24 per pound with another worth $0.42 per pound. How many pounds of the cheaper kind should they use in the mix?
A. 12 pounds B. 42 pounds C. 32 pounds D. 22 pounds
Mathematics
Solve the equation.
+ 
= 4
A. ?
B. {-3}
C. {3}
D. 
Mathematics
Find the volume.Of a rectangular solid 19 m × 15 m × 25 m
A. 7,125 m3 B. 9,025 m3 C. 9,375 m3 D. 4,275 m3
Mathematics