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

The mystery first name of a student in the class does not begin with A, B, C, D, E, or F. the names first letter comes before S, T, U, V, and W. the students wh

What are the most effective tools for establishing and preserving freedom?

The set of integers less than -8

1/10, 3/20, 5/30, 7/40 arithmetic sequence geometric sequence neither

A colloid liquid suspended in a gas is called aerosol true or false

If light travels 10,000 km in 3.0 x 10^-2 how long does it take to travel 1 meter?

this 7-digit number is 8,920,000 when rounded to the nearest ten thousand. the digits to the tens and hundreds places are the least and same value. the value of

what does god's response to each act of creation suggest about his work? a. he wants to create other worlds. b. he is pleased with what he has made. c. he makes

What type of stretch is best included as part of a warm-up? Static Dynamic Isostatic Ballistic

A car traveling with constant speed travels 150 km in 7200 s. What is the speed of the car?