Find the standard deviation s for the given data. Round your answer to one more decimal place than the original data.The heights of a group of professional basketball players are summarized in the frequency distribution below. Find the standard deviation. Round your answer to one decimal place. 
A. 2.9
B. 3.2
C. 3.3
D. 2.8
Answer: D
Mathematics
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Perform the indicated operations. Simplify the answer.
A. - 
B. 
C. - 
D. 
Mathematics
Provide an appropriate response.In a certain state, the railway system carried a total of 146,000,000,000 passengers. Write 146,000,000,000 in scientific notation.
A. 1.46 × 1012 B. 14.6 × 1011 C. 1.46 × 1011 D. 1.46 × 1010
Mathematics
Determine whether or not the function is one-to-one.f(x) = x2 + 1
A. Yes B. No
Mathematics
Provide an appropriate response.Which of the following are true?I. src="https://sciemce.com/media/4/ppg__rr0616191134__f1q186g7.jpg" style="vertical-align: -17.0px;" />
A. none
B. I only
C. I and II only
D. I and III only
E. all of them
= 
II.
+ 
= 0III.
? 
=
Mathematics