The triangle abc square at A, the altitude AH. The circle with center H. radius HA intersects the line AB at D and cuts AC at E. The median AM of the triangle ABC cuts DE at I. Prove that: a) D, H, E are collinear b) Prove that BCDE insider. Determine the center O of this circle. c) Prove that AM is perpendicular to DE when you are done, pls send me the picture. and can you translate all of it to Vietnamese pls ?​

Measure of angles 31 (x+4) (3x+9) me

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp

What is the difference between the equations of a vertical and a horizontal line?