Substitution method

y=-3

2x+y=5

x-2y+z=6

You have two u. s. coins that add up to 30 cents. one of them is not a nickel. what are the two coins?

The polynomial of degree 3, P (x), has a root of multiplicity 2 at x=4 and a root of multiplicity 1 at x=-2. The y-intercept is y=-9.6 Find a formula for P (x)

43 bottles can be filled in 2 minutes write the two ratios implied by this statement how long would it take to fill 860 bottles

I need answers for the Foundations for Algebra Unit test

How many meters are in 21 feet?

Solve by the linear combination method (with or without multiplication) 6x-2y=2 -3x+4y=5

Simplest form of 15/60?

Can the union of two sets have a solution of a null set? why or why not?

How do you solve this equation Half of a number, then reduced by four, gives

A giant pie is created in an attempt to break a world record for baking. The pie is shown below: A circle is shown with a central angle marked 37 degrees and the diameter marked 35 feet.