Find the sum of the measurements of a decagon (10 sides)

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

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