Tracy solved the system of equations by making a substitution for x in the second equation. what equation did she get as a result of that substitution? x = –2y – 2 2x + 3y = –6 –2y – 2 = –6 –2y + 1 = –6 -4y – 2 + 3y = –6 –4y – 4 + 3y = –6

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !

Find a parametrization for the curve「and determine the work done on a particle moving along γ in r3 through the force field f: r^3--r^3'where f(x,y,z) = (1,-x,z) and (a) im (γ) is the line segment from (0,0,0) to (1,2,1) (b) im (γ) is the polygonal curve with successive vertices (1,0,0), (0,1,1), and (2,2,2) (c) im (γ) is the unit circle in the plane z = 1 with center (0,0,1) beginning and ending at (1,0,1), and starting towards (0,1,1)

In the triangle rst, rs = 65 and st = 60. which equation could be used to find the value of angle s?