11-11-2018
Mathematics

contestada

if 3x+2y=14 and 2x+y=7, then x+y=

Respuesta :

MargauxStrb MargauxStrb

11-11-2018

Out of the second equation y=7-2x
Into the first equation
3x+14-4x=14
14-x=14
X=0

Now fill back into the second
Y=7
So x+y is 7

Answer Link

Otras preguntas

Supermarkets often offer a great deal on milk, beef or eggs to get customers into their stores, knowing many customers will then purchase other items that have

What is the interquartile range of the data set? {48, 50, 65, 60, 80, 42, 45, 50} Enter the answer in the box.

What are some line from Macbeth Act 1, Scene 4 with dramatic irony

Explain how you would choose a scale to use for a map. What things would you need to consider

Joshua has more than 250 toy soldiers. When he tries to arrange them in rows of 3, there are 2 left over. When he tries to arrange them in rows of 5, there are

Mr.Ford drove 224 mikes in 4 hours. At what rage of speed did he drive?

(to kill a mocking bird, chapter 2 and 3) Atticus intervenes in Scout's life several times in this section. Briefly summarize these incidents and analyze Atticu

Is that correct ????

¿Cuál es el estilo de la ciudad que aún prevalece? a. colonial c. antiguo b. moderno d. abstracto

1. A group of students is trying to find out which material grows tomatoes best. They have four containers with different types of material in each. In the fir