Solve this linear system using matrices: x1 + 2x2 − x3 = −4 x1 + 2x2 + x3 = 2 −x1 − x2 + 2x3 = 6x1x2x3

What is the value of y? round to the nearest tenth

Find the difference (8ab+a+2) - (3ab+6)

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students