briannalebeaux briannalebeaux

02-05-2022
Mathematics

contestada

What is the solution of the system? Solve using matrices. 25 points

x+2y=9
x+y=1

Respuesta :

asias3802 asias3802

02-05-2022

Answer:

x = -7 and y=8

Step-by-step explanation:

soln

using by elimination method

1|x+2y=9

1| x+y=1

|x+2y=9

-|x+y=1

x-x+2y-y=9-1

0+y=8

y=8

1|x+2y=9

2|x+y=1

|x+2y=9

-|2x+2y=2

x-2x+2y+2y=9-2

-x=7

divide -1 both side with the make value of x

x=-7

therefore x=-7 and y=8. this is my answer

Answer Link

Otras preguntas

number 1 I need help with confused

Who was the African-American who called the war with Mexico disgraceful and cruel? Why?

Why is the enlightenment considered the turning point in world history

How many hawksbill turtles are left in the world?

What is the value of the expression shown below when a=51, b=2, and c=17? 3(a\c)^2

find the sum of 3b/b+2 and 12/b+2 and express it in simplest form

Three numbers are in the ratio 6:3:1, and the sum of these numbers is 420. If the first number is reduced by 50%, and the second number is increased by 42, and

Janette bought a portable CD player on sale. The regular price was $100. She was charged $89. a) What percent of the regular price did Janette pay? b) What perc

which fraction shows 32/48 in simplest form

What is the value of the expression shown below when a=51, b=2, and c=17? 3(a\c)^2