giasienna14 giasienna14

02-02-2021
Mathematics

contestada

this is solving systems of equations by elimination, though I am a bit confused

this is solving systems of equations by elimination though I am a bit confused class=

Respuesta :

thebecks thebecks

02-02-2021

Answer:

x=7

y=-1

Step-by-step explanation:

4x+8y=20

-4x+2y=-30

8y=20-4x

y=(20-4x)/8

substitute

-4x+2(20-4x)/8=-30

-4x+(40-8x)/8=-30

-4x+5-x=-30

-5x=-35

x=7

4(7)+8y=20

8y=-8

y=-1

Answer Link

Otras preguntas

What is 10% off £1.80?

which of these events in history does seidman say occurred in direct violation of the constitution? a. the building of the white house b. Formation of the supre

Number like 10,100,1000,and so on are called____

What does the monogenesis theory in Language emergence state ?

Essay about the death penalty

You have decided to study the effect of loud noise on plant growth. You put one plant in a quiet room and the other plant in your school's band hall. Providing

Which of the following is not a convergent boundary? A. Continental-volcanic B. Oceanic-oceanic C. Oceanic-continental D. Continental-continental

What is 1 Third of 10000

in a direct democracy who votes on government policy

Describe a real world situation that can be represented by the product 8(-20). Then find the product and explain what the product means in terms of the real wor