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

Explain how a reader might interpret the same character, in two different settings, differently. your answer should be at least 150 words.

What is meant by the phrase in 1900 Europeans believe the world was their oyster

What are the next two terms for 7,56, 448, and 3584

Rick is overweight and will soon get hypertention. Which diet is best for Rick? a diet high in protein and low in unsaturated fats a diet high in calcium and lo

What two commands did jesus give concerning lazarus before he could live a new life?

A contestant on a quiz show gets 150 points for every correct answer and loses 250 points for each incorrect answer. after answering 20 questions, the contestan

How to write an address with an apartment number?

Dolly must clean up her room before she goes out. 5. In this sentence, what word begins the subordinate clause? A. Dolly B. she C. clean D. bef

Portland, Oregon and Minneapolis, Minnesota are at about the same latitude. Minneapolis is located in the middle of the continent while Portland is located on t

mistakes by the federal reserve during the great depression?