Work out m and c for the line: y = 4 − 2 x

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

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

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*