Arthur drops a ball from a height of 81 feet above the ground. Its height (h) is given by the equation h=-16t^2+81, where t is the time in seconds. For which interval of time is the height of the ball less than 17 feet? t>2
0<t<2
t=2
-2<t<2​

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7