Which matrix represents the system of equations below? ( 8x – 9y +13z = 11
-8x - 5y + 5z = 15
3x+4y - 8z = -10

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?