Find the variance of the following data: 10, 16, 7, 9, 4, 15, 7, 11, 9, 12, 16, 8, 6, 8, 12 A. 12.0
B. 1.88
C. 12.4
D. 3.52

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Find the arc length parameter along the given curve from the point where tequals=0 by evaluating the integral s(t)equals=integral from 0 to t startabsolutevalue bold v left parenthesis tau right parenthesis endabsolutevalue d tau∫0tv(τ) dτ. then find the length of the indicated portion of the curve r(t)equals=1010cosine tcost iplus+1010sine tsint jplus+88t k, where 0less than or equals≤tless than or equals≤startfraction pi over 3 endfraction π 3.

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?