Solve the following system of equations. 4x-2y-z=-5 x-3y+2z=3 3x+y-2z=-5

1 answer:

3 0

4x - 2y - z = - 5 ______×2x - 3y + 2z = 3 _______×13x + y - 2z = - 5 ______×1
8x - 4y - 2z = - 10x - 3y + 2z = 33x + y - 2z = - 5
8x - 4y - 2z = - 10(+) x - 3y + 2z = 3_____________9x - 7y = - 77y = 9x + 7y = 9/7x + 1
x - 3y + 2z = 3(+) 3x + y - 2z = - 5_____________4x - 2y = - 24x - 2(9/7x + 1) = - 24x - 18/7x - 2 = - 210/7x = 0x = 0
y = 9/7(0) + 1y = 1
0 - 3(1) + 2z = 32z = 6z = 3

You might be interested in

You are holding a kite string in your hand. The angle of elevation from your hand to the kite is 53∘and the distance to the kite

Sophie [7]

Answer:

43 degrees F.

Step-by-step explanation:

3 0

3 years ago

Sum of two numbers is 42 and their difference is 8 . Find the numbers ?

worty [1.4K]

Answer:

25 and 17

Step-by-step explanation:

25+17=42

25-17=8

7 0

2 years ago

Please help!! Rewrite the formula to determine the amount of money they will make.

leva [86]

We have this equation to start with: m/n = 5.5. To achieve the desired equation, you need to multiply the entire equation by n, giving you this equation: m = 5.5n. Hope this helps!

3 0

2 years ago

Solve for y ax+by=c help asap

jekas [21]

$ax + by = c\\\\by = c - ax\\\\\boxed{y = \frac{c-ax}{b}}$

7 0

3 years ago

Help with questions 21-23 using pemdas

taurus [48]

Answer:

21. 123 22. 6.86 or 6/ 6/7 23. 90

Step-by-step explanation:

21. (6+4)² + (22+10÷2)

(10)² + (22 + 5)

100 + 27

127

22. (11+42-5) ÷ (11-4)

48 ÷ 7

6.85 or 6 6/7

23. (17-3) × (14 - 6) -22

14 × 8 - 22

112 - 22

5 0

2 years ago