blcollett blcollett
  • 06-05-2017
  • Mathematics
contestada

-2x+15y=24 2x+9y=24, what is the value of x and y

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 06-05-2017
eliminate x's by adding te 2 equations

add them

-2x+15y=24
2x+9y=24 +
0x+24y=48

24y=48
divide both sides by 24
y=2

sub back

2x+9y=24
2x+9(2)=24
2x+18=24
minus 18 both sides
2x=6
divide 2
x=3


x=3
y=2

(x,y)
(3,2)
Answer Link

Otras preguntas

what element electron configuration 1s2 2s2 2p6 3s2 3p5
Earth’s natural “insulating blanket” is the biosphere..
The sodium-potassium pump actually changes shape as it shuttles ions across the cell membrane. true or false?
Which formula represents a molecule with the most polar bond? a. CO b. NO c.HI d.HCI
The Delhi Sultanate lost control of northern indian when a period of disunity began after. A. Hindus in northern india rebelled against islamic rule B. Arab arm
Water makes up approximately how much of a human's body weight?
$800 is deposited in an account that pays 9% compounded semi-annually. Find the balance after 4 years.
The length of a rectangle is 7 mm longer than its width. Its perimeter is more than 62 mm. Let w equal the width of the rectangle. Write an expression for th
I have to use elimination -6x-6y=6 12x+12y=-12
what is the least common denominator of 5/8 and 2/3 what is the least common denominator of 3/5 and 7/1