2 Find the area of the semicircle.
Either enter an exact answer in terms of a or
use 3.14 for a and enter your answer as a
decimal.
units2

Will give brainliest sum of arithmetic series (sigma notation) find the numerical answer to the summation given below. (image shown below)

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11