Solve the problem.Classify the angle as right, acute, obtuse, or straight.

A. Obtuse
B. Acute
C. Straight
D. Right

Answer: A

Mathematics

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Find the derivative of y with respect to the independent variable.y = (cos ?)

A. -(cos ?)-1 sin ?
B. - cos ? sin ?
C. -(cos ?)-1 sin ?
D. (cos ?)-1

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Mathematics

Express the number in scientific notation.0.0000004

A. 4 × 10-6 B. 4 × 10-8 C. 4 × 10-7 D. 4 × 10-9

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Mathematics

Find the mode or modes (if any).During an experiment, the following times (in seconds) were recorded: 5, 9, 98, 3, 2, 8, 25, 1, 4, 16.

A. 16.5 sec B. 8 sec C. 9 sec D. no mode

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Mathematics

Add or subtract as indicated. Assume all variables represent non-negative real numbers.9 - 13 + 6

A. 15 - 13
B. 2
C. 2
D. 15 - 13

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Mathematics