laurenyoungblood23 laurenyoungblood23
  • 01-11-2019
  • Mathematics
contestada

13) -3x - 4y = 8
-4x - 3y=6​

Respuesta :

nguyenminhnguyet82
nguyenminhnguyet82 nguyenminhnguyet82
  • 01-11-2019

Answer:

x = 0, y = -2

Step-by-step explanation:

-3x - 4y = 8  (1)

-4x - 3y=6​ (2)

Multiply (1) by -4 and (2) by -3, we have:

12x + 16y = - 32  (3)

12x + 9y= -18​ (4)

Subtract (4) from (3), we have:

(12x + 16y) - (12x + 9y) = - 32  - (-18)

<=> 7y = - 14

=> y = - 2

Replace y with - 2 in (3), we have x = 0

Answer Link

Otras preguntas

The fastest a human has ever run is 27 miles per hour. How many miles power minute did the human run?
What ratios are equivalent to 9:2
What is 25% of 6??? Is it 1.5?
Hi how do you write the number 31 in Italian? Thanks need this answer tonight plz homework is due tomorrow
36 is what percent less than 48?
The ordered pairs (0, -2), (1, 1), (2, 4), (3, 7), and (4, 10) represent a function.  What is a rule that represents this function?
How to draw a smiley face on the graph using the Y= button on a graphing calculator
What sort of problem do you use acceleration due to gravity ? What sort of problem do you not ?
To transform a plant, scientists inject DNA into a plant leaf. TRUE OR FALSE?
When Jenny writes the pencil exerts a force of 5N on the paper The Area of the pencil in contact with the paper is 0.5 mm² calculate the pressure of the pencil