Yvette encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, she multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is what is the secret phrase? determine the location of spaces after you decode the text.
a.-find the product
b.-find the inverse
c.-fine is the piano
d.-fine is a warm day

Question 2 (essay worth 10 points) (03.02 mc) in δabc shown below, point a is at (0, 0), point b is at (x2, 0), point c is at (x1, y1), point d is at x sub 1 over 2, y sub 1 over 2, and point e is at the quantity of x sub 1 plus x sub 2 over 2, y sub 1 over 2: triangle abc is shown. point d lies on segment ac and point e lies on segment bc. a segment is drawn between points d and e. point a is at the origin. prove that segment de is parallel to segment ab.