The circumference of a circle is 69.9 m. Find its radius. Use the rules for working with measurements.
A. The radius is 4.72 m.
B. The radius is 11.1 m.
C. The radius is 5.56 m.
D. The radius is 22.2 m.
E. The radius is 44.5 m.
Answer: B
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Graph the curve over the given interval together with its tangent at the given value of x. Graph the tangent with a dashed line.y = cos(x), -2? ? x ? 2?, x = 
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Determine whether A = B, A ? B, B ? A, A ? B, B ? A, or if none of these applies.A = {4, 5, 6}B = {4, 5, 6}
A. A = B B. None of these C. A ? B, B ? A, and A = B D. A ? B, B ? A, and A = B
Provide an appropriate response.Rationalize the denominator: 
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Solve.One day 30 mail carriers were sick with the flu. If this were 60% of the total number of mail carriers, how many mail carriers were there altogether?
A. 1800 mail carriers B. 50 mail carriers C. 500 mail carriers D. 18,000 mail carriers