Estimate the product or quotient by first rounding each number so that there is one nonzero digit.Divide 31,182.48 by 48.6
A. 6
B. 6000
C. 60
D. 600
Answer: D
Mathematics
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Find Dxy.y = 
A. 
B. 
C. 
D. 
Mathematics
Write the English phrase as an algebraic expression. Let x represent the number. Simplify the expression, if possible.8 times a number
A. 8x
B. 
C. 8 - x
D. 8 + x
Mathematics
Write the quotients with positive exponents.
A. -4x2 B. 4x10 C. 4x2 D. -4x10
Mathematics
Find the area of the specified region.Inside the lemniscate r2 = a2 sin 2?, a > 0
A. 0
B. a2
C. ?a2
D. 
Mathematics