Solve the following system of equations algebraically for all values of a, b, and c.

-3a - b - 3c = - 8

-5a + 3b + 6c = - 4

-6a - 4b + c = - 20

Factor completely 3x^2-17x-28

Arrange the following in order from largest to smallest spiral, giant elliptical, dwarf elliptical, and irregular:

Simplify this expression 5 (y+z)

Rachel was an 85 average after four test. what does she need to earn on the next test if she wants to raise her average to exactly 88?

A rectangle has vertices at these coordinates. (5, - 3), (5, - 8), (8, - 3) What are the coordinates of the fourth vertex of the rectangle? Enter the coordinates in the boxes. will give brainlest

What is 7 hunderedths in simpilest form?

Solve - 7x + 2x = - 45.

A car travelled 100 km with half the distance at 40 km/h and the other half at 80 km/h. Find the average speed of the car for the whole journey.

A milk container capacity is one gallon. How many cups would that equal?

Bought three boxes totaling 151 book cost 50% more than the other two what was the price of the more expensive book 80 85 90 95 100