Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.cos 64°

A. 0.44
B. 0.39
C. 0.57
D. 0.26


Answer: A

Mathematics

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Solve the problem.Bengisu was pregnant 274 days and 264 days for her first two pregnancies. In order for Bengisu's average pregnancy to equal a national average of 266 days, how long must her third pregnancy last?

A. 242 days B. 260 days C. 269 days D. 268 days

Mathematics

Factor by grouping.2x + 16 + xy + 8y

A. (x + 8y)(2 + y) B. (x + 8)(2 + y) C. (y + 8)(x + 2) D. (y + 8)(2x + y)

Mathematics

Write a numerical expression for the phrase and simplify it.20 less than the difference between 6 and -2

A. [6 - (-2)] - 20; -16 B. [6 - (-2)] - 20; -12 C. 20 - [6 - (-2)]; 12 D. (6 - 2) - 20; -16

Mathematics

Use Simpson’s Rule with n = 6 to estimate the length of the curve y = 3 sin x, 0 ? x ? ?. Round your answer to six decimal places.

What will be an ideal response?

Mathematics