In a science contest, 30 students will present their science projects. Each student gets to talk for 20 minutes. How much time is needed
to present all of the science projects?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

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

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3