vaniavidal666 vaniavidal666
  • 03-05-2019
  • Mathematics
contestada

Use substitution to solve the system of equations. 2x+4y=8 3x-5y=1

Respuesta :

kudzordzifrancis
kudzordzifrancis kudzordzifrancis
  • 03-05-2019

ANSWER

The solution is (2,1)

EXPLANATION

The given equations are:

2x+4y=8...(1)

3x-5y=1...(2)

We make x the subject in the first equation to get:

2x=8-4y

This means that,

x=4-2y...(3)

Put equation (3) into equation (2)

3(4-2y)-5y=1

Expand:

12-6y-5y=1

-6y-5y=1-12

-11y=-11

y=1

Put y=1 into equation (3).

x=4-2(1)=2

The solution is (2,1)

Answer Link

Otras preguntas

This man began the Fascist party in Italy. Benito Mussolini Adolf Hitler Paul Von Hindenburg Joseph Stalin
During which decade did transcontinental rail service begin in the United States?
Mr Johnson is currently four times as ols as his son, David. If Mr. Johnson was 46 years old two years ago, how old is David now?
There are two different species of finch that live on the same small island, species A and species B. Both species successfully feed and reproduce on the island
At the local aquarium there are 10 dolphins 8 penguins and 4 whales what is the ratio of penguins to whales
in word form how do you write 710,718
how are real numbers used in everyday life
what elements are in olive oil? i am really thankful if u answer this :) ( all elements in olive oil )
He did not have a leg to stand on what does that idiom mean?
Calcium carbonate is a type of hydrogenous sediment that can be buried and hardened into _____. A. limestone B. siliceous ooze C. calcareous ooze