Perform the indicated operation. Write the answer in scientific notation.(6.9 × 10-4)(7.5 × 106)

A. 5.175 × 103
B. 5.175 × 102
C. 1.61 × 102
D. 14.4 × 1010

Answer: A

Mathematics

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Solve the system using Cramer's rule and a graphing calculator. (Round to two decimal places.)5.27x - 0.53y = 1-5.83x - 9.51y = 6

A. {(-0.12, 0.70)} B. {(0.70, 0.12)} C. {(-0.70, 0.12)} D. {(0.12, -0.70)}

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Find the limit, if it exists. 

A. 0 B. 5 C. Does not exist D. -1

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Solve for rate in the problem. Round to the nearest tenth of a percent.982 employees is   % of 795 employees.

A. 0.1 B. 1.2 C. 81.0 D. 123.5

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Represent the vector in the form v = ai + bj whose magnitude and direction angle are given. = 8; ? = 30°

A. v = 4i + 4j
B. v = 4i + 4j
C. v = -4i + 4j
D. v = 4i + 4j

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Mathematics