Choose the most reasonable unit of measure.Circumference of a coin 68 
(mm, cm, m, km)
A. km
B. mm
C. cm
D. m
Answer: B
Mathematics
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Evaluate the integral.
x dx
A. x cos-1x - 
+ C
B. x cos-1x - 2
+ C
C. x cos-1x - 
+ C
D. x cos-1x + 
+ C
Mathematics
Find the greatest common factor of the numbers.12, 28, 32, 36
A. 1 B. 12 C. 4 D. 3
Mathematics
Use the x-intercepts to find the intervals on which the graph of f is above and below the x-axis.f(x) = (x - 3)3
A. above the x-axis: no intervals below the x-axis: (-?, 3), (3, ?) B. above the x-axis: (-?, 3), (3, ?) below the x-axis: no intervals C. above the x-axis: (-?, 3) below the x-axis: (3, ?) D. above the x-axis: (3, ?) below the x-axis: (-?, 3)
Mathematics
Find a cofunction with the same value as the given expression.sin 81°
A. cot 9° B. tan 9° C. cos 81° D. cos 9°
Mathematics