Can someone me i don’t know what i am doing
i need

Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he 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. yummy is the corn the tomato is red the corn is yummy red is the tomato

Ineed the solution to this problem and the steps.

What is the name of the segment inside the large triangle? -perpendicular bisector -altitude -median -angle bisector