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

If you answer parts one and 2 ill give you brainiest and 30 points
expectantly, sensation, pedestal , bugle meaning in one word​
A bus starts to move from rest. if it's velocity becomes 90 km per hour after 8 seconds , calculate it's acceleration (numerical problem)​
4^2= 16 Need the answer to it no one can figure it out!!!
Write 7x-y=8 in the form of y=my+b
Which of these lines contains imagery that appeals to hearing? And the echoes jump, and tinkle, and swell We've none of us very much chance at a leaf.
A hurricane is most likely to form :
Which of the following statements best describes a stage in the crowding-out effect? The government issues new money, which eventually causes inflation. The
Which scenario would create a challenge for efficient global trade? A. surplus production capacity in a country B. unhealthy relations between countries C.
Find the length of the rectangle. The perimeter of the rectangle is 34 inches. The width of the rectangle is 7 inches. The length of the rectangle is L. A.