Find the radius of the circle, if the diameter is 16.
A. 4
B. 5
C. 8
D. 3
E. 32
Answer: C
Mathematics
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Solve.Find two numbers whose product is 21 and the sum of whose reciprocals is 
A. 63 and 
B. 3 and 7
C. 441 and 
D. 147 and 
Mathematics
Find the exact value. Do not use a calculator.sin 2?
A. 1
B. 
C. 0
D. undefined
Mathematics
Determine the approximate area of the given circle, using 3.14 for ?. Round the answer to the nearest hundredth.
A. 157 cm2 B. 1962.5 cm2 C. 490.63 cm2 D. 78.5 cm2
Mathematics
Rewrite the logarithm 
as a ratio of common logarithms.
a. 
b. 
c. 
d. 
Mathematics