amaqueda
amaqueda amaqueda
  • 02-04-2022
  • Mathematics
contestada

Find the solution of the system of equations.
8x – 2y = -30
–9x + 4y = 18

Respuesta :

Аноним Аноним
  • 02-04-2022

Step-by-step explanation:

8x – 2y = -30 } ×2

16x - 4y = -60

–9x + 4y = 18

___________

7x=-42

x=-6

8(-6)-2y=-30

-2y=-18

y=9

Answer Link
annie413
annie413 annie413
  • 02-04-2022

Answer:

(-6,-9)

Step-by-step explanation:

The quickest way is to solve with elimination. Multiply the top equation by 2.

2(8x – 2y = -30)

16x-4y=-60

16x-4y=-60

–9x + 4y = 18

7x=-42

x=-6

8x – 2y = -30

8(-6) – 2y = -30

-48-2y=-30

-2y=18

y=-9

Answer Link

Otras preguntas

Historians of china have traditionally dated the beginning of Chinese civilization to the founding of the what??
How is it possible for Mercury to have frozen ice ?
how is mass transit in cities a possible solution tk urban air pollution?
find an equivalent expression without parentheses -(50x-15y+15)=
how is mass transit in cities a possible solution tk urban air pollution?
Historians of china have traditionally dated the beginning of Chinese civilization to the founding of the what??
how is mass transit in cities a possible solution tk urban air pollution?
Historians of china have traditionally dated the beginning of Chinese civilization to the founding of the what??
Prove that (x^5)-(x^2)+2x +3=0 has at least one real root. Prove that x=cosx has at least one solution.
Prove that (x^5)-(x^2)+2x +3=0 has at least one real root. Prove that x=cosx has at least one solution.