Which equation describes a circle with center (-1, 2) passing through the point (2, 4)?
A (x + 1)2 + (y - 2)2 = 13
B (x - 1)2 + (y + 2)2 = 13
C (x + 1)2 + (y - 2)2 = 169
D (x - 1)2 + (y + 2)2 = 169

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.

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.