Use Chebyshev's theorem to solve the problem.In a certain distribution of numbers, the mean is 50 and the standard deviation is 6. What can you say about the percentage of numbers that are less than 20 or more than 80?
A. at most 4%
B. at most 96%
C. at least 96%
D. at most 20%
Answer: A
Mathematics
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Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.55 m = ____ ft
A. 180.4 ft B. 60.0 ft C. 50.5 ft D. 16.8 ft
Mathematics
Graph the ellipse.
+ y2 = 1
A. 
B. 
C. 
D. 
Mathematics
Write the expression using only the indicated logarithms.log5 (x + y) using natural logarithms
A. ln (x + y) + ln 5
B. 
C. ln (x + y) ln 5
D. 
Mathematics
Use a proportion to solve the problem.A label printer prints 2 pages of labels in 4.2 seconds. How long will it take to print 6 pages of labels?
A. 12.60 sec B. 14.60 sec C. 16.60 sec D. 15.60 sec
Mathematics