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

Which statement is true of mystery, miracle, and morality plays?

A gene or trait that appears or expresses itself over a recessive trait is called a/an A. mutation. B. chromosome. C. influential gene. D. dominant

There are different types of muscle cells, but heart contractions are caused by a specific type of muscle cell. A. True B. False

Selene considers herself to be a tactile learner. Which type of class would Selene do best in?

What is the answer -104=8x

how long will it take a seal swimming at a speed of 8 miles per hour to travel 52 miles❔

A number is 1/7 of another number. The difference is 18

60peple will be attending a dinners party. Each table at the party can seat 8 people. How many tables are needed? Write and solve the number fact you used to fi

How are state and federal appellate courts similar? a)Both hear cases from lower courts. b)Both have judges and juries. c)Both hear civil cases only. d)Both se

What was one reason the Europeans were able to defeat the Native Americans? A) There were more European men to fight. B) The Europeans had better weapons. C) Th