josh734853
josh734853
30-09-2020
Mathematics
contestada
x+3y−z=2
4x+2y+5z=1
3x+z=12
Respuesta :
mhanifa
mhanifa
30-09-2020
Answer:
x=5, y= -2, z= -3
Step-by-step explanation:
Given system of equations
x+3y−z=2 (1)
4x+2y+5z=1 (2)
3x+z=12 (3)
Solution
3*(2) - 2*(1)
10x + 17z = -1 (4)
17*(3) - (4)
51x - 10x + 17z - 17z = 12*17 - (-1)
41x = 205
x = 5
5*3 + z = 12 ⇒
z = -3
5 + 3y -(-3) = 2 ⇒ 3y = -6 ⇒
y = -2
Answer Link
VER TODAS LAS RESPUESTAS ( 72+ )
Otras preguntas
The writer from rural kentucky feels that immigrants come to the united states because of:
You have the freedom to ______ the government when you feel you have been wronged.
which value is the closest to the percentage of all the people who ate hamburgers that were adults
Which statement best explains how improved transportation technologies affected the economies of ancient civilizations? A. Tax collectors could travel into dist
Which size can of green beans shown in the table has the lowest unit price?
Help pls IM so confused
help!!! 10 POINTS!!!
What is the factorization of the polynomial graphed below? Assume it has no constant factor. Write each factor as a polynomial in descending order.
The largest employer in the nation is the __________.
On what part of a cylinder would you find a soup can label? altitude base height lateral surface