Find the exact circumference of the circle.

A. 35? in.
B. 4900? in.
C. 140? in.
D. 70? in.


Answer: D

Mathematics

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Find all angles in degrees that satisfy the equation. Round approximate answers to the nearest tenth of a degree.cos ? = -0.995

A. { ? = -84.3° + k360° or ? = 264.3° + k360°}
B. { ? = 174.3° + k360° or ? = 185.7° + k360°}
C. { ? = -84.3° + k360° or ? = 95.7° + k360°}
D. { ? = 174.3° + k360° or ? = 354.3° + k360°}

Mathematics

Write the decimal as a percent.0.5692

A. 56.92% B. 5.692% C. 5692% D. 0.5692%

Mathematics

Simplify. Write your answer using only positive exponents. Assume that all variables represent nonzero numbers.x-8? x4? x-6

A. x192
B.
C.
D. -x10

Mathematics

Write as a percent.0.0885

A. 0.0885% B. 88.5% C. 8.85% D. 0.885%

Mathematics