What is the standard of estimating rainfall?

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)