9sin(2x)=9cos(x) find x.

Use the matrix-column representation of the product to write each column of ab as a linear combination of the columns of a.

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

How many terms does the polynomial x^2 y^2 have