Write the number in scientific notation.15,700,000

A. 1.57 × 10-3
B. 4.710 × 107
C. 1.00157 × 105
D. 1.57 × 107

Answer: D

Mathematics

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Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.3x + y = 183x = -4y

A. (8, -6) B. No solution C. (-8, 6) D. Infinite number of solutions

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Evaluate. Assume u > 0 when ln u appears.  dp

A.  e5p2+ C
B. 7e5p2 + C
C. -  e5p2 + C
D. -7e5p2 + C

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Use the given information to find the exact value of the trigonometric function.sec ? = 4, ? lies in quadrant IFind cos .

A.
B.
C.
D.

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Mathematics

Solve.31 = 6 + x

A. 15 B. 31 C. 25 D. 35

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Mathematics