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

Which event most likely influenced the creation of the science fiction genre? A) the Industrial Revolution B) World War I C) the Civil War D) the Gold Rush

automobiles and gasoline are examples of

what part of the nueron that decides whether the message will travel

the progressive movement was sometimes misguided and its interaction with racial minorities because progressive reformers

Scientists today can use many experimental methods to study evolution. Which method was developed after Darwin’s time? DNA comparisons observations fossils expe

We named our business after the Greek Goddess Artemis. Which word should be lowercased to make this sentence correct? Goddess Artemis We Greek

1. A _______ is invested by managers in a diversity of stocks, bonds, and other securities. A. preferred stock B. series EE bond C. promissory note D. mutual f

Many Greek tragedies and comedies have survived to this day. a. True b. False

which one is bigger 1/3 or 1/4

What is75➗blank=9 What is the blank number gonna be