Frequency distribution of the scores from a mathematics test is given in the table below. Find the sample standard deviation.
IntervalMidpoint xFrequency fProduct xf64.5 - 70.5 4 70.5 - 76.5 7 76.5 - 82.5 7 82.5 - 88.5 5 88.5 - 94.5 2 94.5 - 100.5 6 Round your answer to the nearest whole number.
A. 12
B. 10
C. 18
D. 17
E. 8
Answer: B
Mathematics
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Divide.Divide -42 by 0.07
A. -60 B. -0.6 C. -600 D. -6
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Let x be a number. Translate the English phrase or sentence into a mathematical expression. Subtract 68 from a number
A. 68 - x B. 68x C. 68 D. x - 68
Mathematics
Estimate the x-intercept from the graph below and solve for solutions of the polynomial equation when 
.
A. 
when x is equal to 
B. 
when x is equal to 
C. 
when x is equal to 
D. 
when x is equal to 
E. 
when x is equal to 
Mathematics
Solve:
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics