Divide.(2r3 + 3r2 - 20r - 21) ÷ (r - 3)

A. 2r2 + 9r + 7
B. r2 + 7r + 9
C. 2r2 - 9r - 7
D. 2r2 + 9r +  

Answer: A

Mathematics

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Use Newton's method to approximate all the intersection points of the pair of curves. Some preliminary graphing or analysis may help in choosing good initial approximations. Round to six decimal places.y = ex  and y = x2 + 3

A. x ? 1.873123 B. x ? 1.762023 C. x ? 1.373123 D. x ? 1.873233

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Write the sentence as a mathematical statement.Thirteen is less than or equal to fifteen.

A. 13 < 15 B. 13 ? 15 C. 13 ? 15 D. 13 ? 15

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Mathematics

Find the sum.5 + 10 + 15 + ... + 250

A. 6250
B. 6375
C.
D. 6125

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Find the integral. dx

A. x9 - x4 + 7x + C
B. 9x9 - x4 + 7x + C
C. 9x9 - x4 + 7x + C
D. x9 - x4 + 7x + C

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Mathematics