Combine like terms.7ab + 9bc - 9ac - 3bc + 7ab
A. 14ab + 6bc - 9ac
B. 14ab + 9bc - 9ac - 3abc
C. 7ab + 4bc - 9ac
D. 14ab + 9bc - 5ac
Answer: A
Mathematics
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State the number of significant digits and the implied precision of the given number.6.700 × 108
A. 2 significant digits, precise to the nearest 100,000 B. 4 significant digits, precise to the nearest 100,000 C. 9 significant digits, precise to the nearest unit D. 4 significant digits, precise to the nearest thousandth
Mathematics
Simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics
Write the fraction in lowest terms.- 
A. - 
B. - 
C. - 
D. - 
Mathematics
Find the area.
A. 32 mi2 B. 40 mi2 C. 3200 mi2 D. 96 mi2
Mathematics