At one high school, the mean time for running the 100-yard dash is 
with a standard deviation of 0.9 seconds. The times are normally distributed.Find the percent of times that are between 15.2 and 16.1 seconds.
A. 34%
B. 50%
C. 68%
D. 13.5%
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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Write the number in expanded form.50,800
A. 5 thousands + 8 hundreds B. 580 ten thousands C. 5 ten thousands + 8 thousands D. 5 ten thousands + 8 hundreds
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Using the given coordinate, find the other coordinate that makes the ordered pair a solution of the equation.5x + 
y = 28, ( 
,12)
A. -25 B. -5 C. 5 D. 1
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Factor by grouping.20x4 - 15x2 + 8x2 - 6
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