Simplify.
-4
A. -81mn
B. - 
C. 81
D. 
Answer: D
Mathematics
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Change to a percent.
A. 3
%
B. 33
%
C. 
%
D. 
%
Mathematics
Express the number in decimal notation.7 × 10-7
A. 0.0000007 B. -700,000 C. 0.00000007 D. 0.000007
Mathematics
Find the mean for the list of numbers.Inches of snowfall per month: 4.2, 4.5, 2.5, 4.5, 2.3Round answer to the nearest tenth if necessary.
A. 4.2 in. B. 3 in. C. 4.5 in. D. 3.6 in.
Mathematics
Solve the problem.Two sailboats leave a harbor in the Bahamas at the same time. The first sails at 23 mph in a direction 350°. The second sails at 28 mph in a direction 210°. Assuming that both boats maintain speed and heading, after 2 hours, how far apart are the boats?
A. 81.1 mi B. 95.9 mi C. 74.5 mi D. 72.5 mi
Mathematics