ambmundle ambmundle

01-03-2017
Mathematics

contestada

how to use substitution for 4x+3y=13 and x+y=4

Respuesta :

wolf1728 wolf1728

04-03-2017

A) 4x + 3y = 13
B) x + y = 4
B) x = 4 -y Then we substitute this into Equation A

A) 4 (4-y) + 3y = 13
A) 16 -4y +3y = 13
A) -y = -3
y = 3
x = 1

Answer Link

Otras preguntas

Please help. Full explanation if you can. 1. The ratio of boots to sandals in a shoe store is 8:3. If there are 245 more boots than sandals in the store, how ma

Which American suffrage leader was arrested in 1872 when she tried to cast a vote in the U.S. presidential election? A. Susan B. Anthony B. Ida B. Wells C. Carr

What are some possible benefits to a nomadic lifestyle, and what are some possible benefits of a town lifestyle?

What is true about the sum of the measures of any two non-right angles in a right triangle?

Which animal could a bulldog mate with to produce offspring? A. sheepdog B. beaver C. raccoon D. tabby cat

What is true about the sum of the measures of any two non-right angles in a right triangle?

find the absolute value of each rational number |3.7|

what was the result of the peloponnesian war?

What does this poem mean "pretty girl, with faraway eyes, why do you look with such surprise? How did you get to be so wise, old girl in young-girl disguise"

Find a rational number between -1/4 and 2/5