Aprescription balance has a sensitivity requirement of 6.5 mg. explain how you would weigh 20 mg of a substance with an error not greater than 2%.

Find the value of the cosine for angle a

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

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