Use a graphing calculator or spreadsheet software to solve 4x + y + z = 1 8x - 4y - 7z = 2 5y + 9z = 3 using matrices.

Out of 1200 students of a school only 85% passed. how many students failed?

How many proper subsets are there for each set? {a, b, c}

You are in charge of your best friends birthday party. You decid to order food from Jersey Mikes because you have a coupon for $10 off your order. You order 3 large sandwiches, potato salad for $15 and macaroni salad for $12.

How do you solve - 5y-6y=-22

Quadrilateral WXYZ has the following vertices: W (2,3) X (1,1) Y (3,0) Z (5,2

If you are paid an hourly wage of $9.00, determine an equation for finding your weekly gross pay (P) for t hours. Specify an amount between 25 and 40 hours worked for 1 week and determine your gross pay for that week.

What is the value of q in the equation _/4a-2 = _/3a+8

Evaluate the expression xy for x=7 and y=5

Why has Europe conducted so much trade and exploration

The maturity value of a $16,000 non-interest-bearing, simple discount 6%, 60-day note is: