Rationalize the denominator. Assume that no radicands were formed by raising negative numbers to even powers. 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Express the number in scientific notation.0.0000004
A. 4 × 10-6 B. 4 × 10-8 C. 4 × 10-7 D. 4 × 10-9
Mathematics
Express the repeating decimal as a quotient of integers. If possible, reduce to lowest terms.0.
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality graphically.x2 + 2x ? 3
A. (-?, -3] B. [1, ?) C. (-?, -3] ? [1, ?) D. [-3, 1]
Mathematics
Solve the problem.The amount of particulate matter left in solution during a filtering process decreases by the equation 
where n is the number of filtering steps. Find the amounts left for n = 0 and n = 5. (Round to the nearest whole number.)
A. 400, 100 B. 400, 1600 C. 400, 13 D. 800, 100
Mathematics