zoeomcgee2003 zoeomcgee2003

03-11-2020
Mathematics

contestada

Classify the system and identify the number of solutions.
4x + 3y + 6z = 25
x + 5y + 7z = 13
2x + 9y + z = 1

Respuesta :

gavinwhitley gavinwhitley

06-11-2020

Answer: consistent, independent; one

Step-by-step explanation:

Eliminate one variable.

4(x+5y+7z=13)——- 4x+20y+ 28z= 52 (Multiply equation 2 by 4)

Subtract

Write the 2-by2 system.

17y+22z=27

-30y+8z=46

Eliminate y and solve for z

Use one of the equations in the 2-by-2 and solve for y

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