Question

PLEASE SOMEONE HELP ME MY GRADE IS ON THE LINE I WILL GIVE 98 POINTS

Answer 1

2x - 3y - 9z = -32

x + 3z = 8

-3x + y - 4z = -8

Add all the equations together.

-3y - 10z = -32

By looking at the first equation, 2x - 3y - 9z = -3y - 10z.

So 2x = -z.

By looking at the second equation, x + 3z = (-0.5z) + 3z = 8.

So 2.5z = 8, and z = 3.2.

This means that x = -1.6.

Let's substitute into our original equations!

-3.2 - 3y - 28.8 = -32

4.8 + y - 12.8 = -8

Therefore, y = 0!

Since these answers do not contradict each other, they are dependent.

The answers are x = -1.6, y = 0, z = 3.2.

Answer 2

Answer:

The answers are x = -1.6, y = 0, z = 3.2.

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