Determine whether the lines given are parallel, perpendicular, or neither 2x+7y=28
7x-2y=4
Answer, please.

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.

What is the measure of the smallest angle in the diagram? 15 29 32 45

Ill mark the brainliest if you me with the these three questions 7,8,9