Which of these linear equations is perpendicular to y=9x+2? A. y = 9x + 2
B. y = 9x + -1/2
C. y = -1/9x - 9
D. y = 1/9x - o

#12 find the value of x. #13 find the value of the variable.

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.

Whose conclusion is correct? choose all that apply. (two max) elijah emily edward esme