Rachel brings cookies to her dance class one day. She gives 3/5 of them to her friends Karen, Tommy, and Gail. If she gave them 21 cookies, how many did she bring to dance class?

Could someone with number 1 and 2

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

Select the two pairs of figures that are similar.