Rationalize the denominator.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve the problem.A ball is dropped from a height of 50 meters. If each bounce brings it to 90% of its previous height, how far will the ball travel before it stops?
A. 950 m B. 250 m C. 500 m D. 200 m
Mathematics
Simplify the expression.
A. sin x B. -cos x C. cos x D. -sin x
Mathematics
Perform the indicated operations. Write the result using only positive exponents. Assume all variables represent nonzero real numbers.
A. 
B. 
C. -x12
D. x12
Mathematics
Solve. If necessary, round percents to the nearest tenth and all other answers to the nearest whole.In a recent survey of 1050 people, 21 said that their favorite color of car was white. What percent of the people surveyed liked white cars?
A. 51% B. 3% C. 2% D. 50%
Mathematics