What are the values of x and z in the solution to the system of linear equations below?
-3x-2y+4z=-16
10x+10y-5z=30
5x+7y+8z=-21

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x