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 the slope of the line I need this now plz plz plz

A rectangular prism is shown below. If all the dimensions of the prism are tripled,what effect will this have on it’s total surface area?

Which gas giants have a ring system? Select all that apply.✅Saturn✅Jupiter✅Uranus✅Neptune

How many solutions ? 1 solution , no solution , infinite solution ?

I need help please I will mark you brainlists

Patrick measured a house and made a scale drawing. The scale he used was 3 centimeters = 1 meter. What scale factor does the drawing use?

The following lots of Commodity Z were available for sale during the year. Use this information to answer the question that follows. Beginning inventory 10 unit

What is the answer to this test

Please please help its not 3/4.8

The text describes a study conducted in the 1980s in which students rated a plan to divest university funds from South African companies. In the abstract, the p