For which value of x are the two figures similar 15 50 60 80

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.