A rock is thrown from the top of a 763 feet tall building. The distance, in feet, between the rock and the ground t seconds after it is thrown is given by d=-16t2-2t+763. How long after the throw does it take for the rock to first reach 430 feet from the ground?

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

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction