palaguchijosephine2 palaguchijosephine2

15-01-2020
Mathematics

contestada

x=3
5x+4y=-9
-x+4y-2z=-25

Respuesta :

aaronb259657 aaronb259657

15-01-2020

Answer:

y=-6 z=-1

Step-by-step explanation:

5(3)+4y=-9

15+4y=-9

-15. -15

4y=-24

/4. /4

y=-6

-x+4y-2z=-25

-3+4(-6)-2z=-25

-3+-24-2z=-25

-27-2z=-25

+27. +27

-2z=2

/-2. /-2

z=-1

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[tex] - 3 \sqrt{20} \times 5 \sqrt{15} [/tex]