sulrawbat50 sulrawbat50
  • 26-04-2020
  • Mathematics
contestada

4x+2y=20 and 3x-y=10

Which coordinate solves both equations.

Relax

Respuesta :

DeanR
DeanR DeanR
  • 26-04-2020

4x + 2y = 20

3x - y = 10

Multiplying second equation by 2.

6x - 2y = 20

Adding to the first,

10x = 40

x = 4

y = 3x - 10 = 3(4) - 10 = 2

Answer: (4, 2)

Check:

4(4) + 2(2) = 16+4 = 20, good

3(4) - 2 = 12 - 2 = 10, good

Answer Link

Otras preguntas

who what when where why treaty of versailles
Linguistic semantics deals primarily with the _____ of words.A.structureB.meaningC.influenceD.relationship
Which is a rational number?   A.9
Why were bananas and camels so significant in early African history? What do they represent? How did they change the way people lived? Explain
What word means able to work properly while using less energy
What word means able to work properly while using less energy
If n is even, which of the following cannot be odd? a) n + 3 b) 3n c) n² - 1, Can you please explain with some details?
if measure of the angle fhg is 61 degrees, what is measure of angle fpg (on a circle)
What word doesn't belong in this group? That, hat, what, mat, cat, sat, pat, or chat?
What is 0.006 written as a fraction of a percent?