Amedian is perpendicular to the opposite side of a triangle. true or false ?

What is the lcm of 16 and 40 ? 24 and 40 ?

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?