Which equation results from applying the secant and tangent segment theorem to the figure X plus 4X plus 2X

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

Will give brainliest for correct answer 8. use the distance time graph to answer these questions: a. what does the graph tell us about the velocity of the car? b. what is the average velocity of the car? (show work) c. is the velocity reflected in the graph positive or negative?d. is there any point on the graph where the car is not moving? how do we know?