codymarcinko codymarcinko
  • 15-11-2020
  • Mathematics
contestada

Solve this system of equations by using a matrix. 6x-5y=-15, 4x+3y=-10

Respuesta :

EpiLord
EpiLord EpiLord
  • 15-11-2020

Answer:

(-2.5,0)

Step-by-step explanation:

1.5(4x+3y)=-10(1.5) =

6x+4.5y=-15

6x+4.5y= 6x-5y (substitution)

-6x from both sides

4.5y =-5y

y=0

6x-0=-15

divide by 6

x=-2.5

Check:

-2.5(4)+3(0)=-10

-10= -10 (correct!)

(6)-2.5-0=- 15 (correct!)

Answer Link

Otras preguntas

I need this now. Describe Cortes’ first week with the Aztecs. Include how the Aztec’s responded to Mocetezuma’s treatment of Cortes.
Please hurry I need this fast
Where did Jim Crow laws exist
24 ten thousands plus 11 thousand
How would i label a poem
which of the following terminating decimals is equivalent to -1 3\4
what are examples of the food and drug act being enacted ?​
Evaluate the expression 3x for x = 7
please solve these questions ❤❤​
Which two lines appear as if they will never intersect? Select all that apply. a b c d e f