kingisoffical kingisoffical
  • 11-01-2021
  • Mathematics
contestada

-3x + 4y = 24
4x - y = 7

3x 4y 24 4x y 7 class=

Respuesta :

jamyangnorzin
jamyangnorzin jamyangnorzin
  • 11-01-2021

Answer:

y=7-4x/-1

y=-7+4x

substituting y=-7+4x

-3x+4(-7+4x)=24

-3x-28+16x=24

-3x+16x-28-24=0

13x-52=0

13x=52

x=52/13

x=4

substituting x=4

-3x+4y=24

-3(4)+4y=24

-12-24+4y=0

-36+4y

4y=36

y=36/4

y=9

Answer Link

Otras preguntas

The length of a rectangular mailing label is 4 centimeters less than twice the width .the perimeter is 46 centimeters. Find the dimensions
If a plane flies 612 km per hour, approximately how many kilometres will it travel in 13 hours?
Mary bought a book that cost $18 at a diascount of 16% . what did she pay for the book
How do polyatomic ions form?
A family has annual loan payments equal to 30% of their annual income. During the year, their loan payments total $15,680. What is the family's annual income? (
The length of a rectangular mailing label is 4 centimeters less than twice the width .the perimeter is 46 centimeters. Find the dimensions
is 5/8 bigger or smaller than 4/6is -3/2 bigger or smaller than -4/6
If JK=20-x^2, KL=2-x, and JL=10 find x
To get an A in a course, you must have an average of at least 90% on four tests worth 100 points each. Your scores on the first three tests were 89, 92, and 81.
How do polyatomic ions form?