lyssa48 lyssa48

19-10-2017
Mathematics

contestada

X=3y-1
2x+y=12
Solve the system of equations using the substitution method

Respuesta :

19-10-2017

Substitute the top equation in as X in the 2nd equation.

2(3y-1)+y=12
Simplify to:
6y-2+y=12
7y-2=12
Add 2 to both sides
7y=14
Divide 7 from both sides
y=2

Find X by substituting y in the first equation
X=3(2)-1
X=6-1
X=5

x=5 y=2

Answer Link

Otras preguntas

2.49 meters to centimeters

what is 1,296 divided by 36

A plant is getting energy from the Sun, which helps it grow. Explain how energy is being changed from one form into another. I know that the Sun is giving it r

what is 4.41 times 10 to the negative second power

what was the first step in becoming a knight?

An oak tree is 60cm tall. It grows at a rate of 8% per year. A conifer is 50cm tall. It grows at a rate of 15% per year. How many years does it take before the

how many millimeters are in 88μm

How to convert grams to liters?? V.V? so if your using the weigh machine...and the machine reads in grams and you want liters........what is the conversion?? o

the creative input of the artist and the meaning behind what was created is as important as the elements of art. describe how the artist has used proportion and

calculate the interest would I earn on $500 at 6% simple interest if you made no withdrawals or deposits for three years