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

You observe someone suddenly collapse. The victim is unresponsive, making gasping sounds and no pulse. What course of action should you take

If you were given a large data sets such as the sales over the last year of Amazons top 100 customers what might you be able to do with these data? What might b

Four runners start at the same point; Lin, Elena, Diego, Andre. For each runner write a multiplication equation that describes their journey. Lin runs for 25 se

what are the worst things the romans did to the barbarians

At 90°C. you dissolved 10 g of KCI in 100. g of water. Is this solution saturated or unsaturated?A. saturatedB. unsaturated

What do we call a melody with smooth and connected notes?.

WILL GIVE BRAINLYIEST!!!!In the first stage of the formation of the Psalter, each Psalm began with _______ .1. Music2. Hezekiah3. An individual4. David

Which equation is quadratic in form? 3x5 8x3 6 = 0 6x4 7x2 – 3 = 0 5x6 x4 12 = 0 x9 x3 – 10 = 0.

A certain test is worth 125 points. How many point are needed to obtain a score of 85%

PLEASE HELP ME What is a major risk the Trans-Alaska Pipeline poses to the environment? A. It allows many people to have access to fuel. B. Its pipes can break