kendramiller8551 kendramiller8551

01-03-2018
Mathematics

contestada

Solve the following system of equations by using the substitution method.
x = y + 3
2x + y = 9

(4, 1)

(5, 2)

(3, -2)

Inconsistent

Respuesta :

WaleMaths WaleMaths

04-03-2018

x = y + 3
2x + y = 9

Solution..
---------------

Substitute for x=y+3 in the second equation...

2x+y = 9

2(y+3)+y=9

2y+6+y=9
3y+6=9
3y=9-6
3y=3
y=3/3
y=1....

Substitute for y=1 in the first equation...

x=y+3

x = 1+3
x=4..

Am sure the answer is quite evident now...

Answer Link

Otras preguntas

You randomly choose a marble from a jar. The jar contains 3 red marbles, 10 blue marbles, 8 green marbles, and 4 yellow marbles. Find the probability of choosin

Consider this right triangle. Enter the ratio equivalent to tan(R).

Using common denominator, what is an equivalent fraction to 8/15?

Zahra reads 45 words per minute. at this rate. how many minutes will it take for her to read 180 words

What is an advantage to the type of circuit shown in the image to the left? A. The bulb closest to the battery is the brightest. B. If one bulb burns out, the o

Five children have heights of 138cm, 135cm, 140cm, 139cm, and 141cm. What is the range of their heights?

On a scale drawing, the height of a tree is 3 inches

There are able in batch marble is a different color the colors are red, orange, yellow, green, blue, purple, black and white. Two marbles are randomly drawn fro

what is the answer to ?+?x?=58

Can someone please help me with these 2 questions