aanilbohora
aanilbohora aanilbohora
  • 13-12-2020
  • Mathematics
contestada

a) Solve by determinant method: x - y = 2, 2x + 3y = 4​

Respuesta :

AFOKE88 AFOKE88
  • 18-12-2020

Answer:

x = 2

y = 0

Step-by-step explanation:

x - y = 2

2x + 3y = 4

Using creamers rule of determinants, we have;

D =

|1 1|

|2 3|

Thus; D = (1 × 3) - (1 × 2)

D = 1

Dx =

|2 1|

|4 3|

Dx = (2 × 3) - (1 × 4)

Dx = 2

Dy =

|1 2|

|2 4|

Dy = (1 × 4) - (2 × 2)

Dy = 0

Thus;

x = Dx/D = 2/1

x = 2

y = Dy/D = 0/1

y = 0

Answer Link

Otras preguntas

What development lowered the price of newspapers to a penny a copy?
Robert has built a mechanical model solar system with three balls representing planets at the end of rods attached to the centre representing the sun. The plane
can u guys answer this and fast (3.6*10^2)*(2.8*10^2) and also this one (3.6*10^6)*(2.2*10^-4) please thanks
How does electrical forces act on a maglev train
Which conflict from The Tragedy of Julius Caesar is not an example of external conflict?
Why do historians consider political cartoons to be credible resources in historical inquiry?
Even though it did not appear a WMD program might be in place, what did Hussein do that increased the fears of weapons inspectors?
Languages are grouped into families based on __________.
Why is it desirable to have a low resting heart rate
Pat helps run an animal shelter. The actual number of animals brought in during a particular month was 150. The percent error was 12%. If Pat estimated on the h