joangely
joangely
12-12-2016
Mathematics
contestada
{-4y-11x=36
{20=-10x-10y
Respuesta :
MrQuizzical
MrQuizzical
14-12-2016
Solve this by method of elimination where you make one term equal and then cancel it out.
36=
-4y-11x (Equation 1)
20=-10x-10y (Equation 2)
Reorganize the terms.
36=-11x-4y
(Equation 1)
20=-10x-10y
(Equation 2)
Multiply Equation 1 by 5 and Equation 2 by 2 to make y equal.
180=-55x-20y
40=-20x-20y
Now subtract Equation 2 from Equation 1. It is a bit messy but it looks like:
180-40=-55x-(-20x)-20y-(-20y)
180-40=-55+20x-20y+20y
140=-35x
We have now removed y from the equation, so we can now solve for x. Divide each side by -35 to find x.
140=-35
x
-4=
x
We have the equation
20=-10x-10y. Substitute -4 for x to solve for y.
20=-10x-10y
20=-10(-4)-10y
20=40-10y
-20=-10y
2=y
x=-4
y=2
Answer Link
VER TODAS LAS RESPUESTAS ( 97+ )
Otras preguntas
If x-2y=6 and x+y=10.Find 2x+2y.
por favor sumar 3/4 4/5 7/8
An item has gone missing from the friends bag at school the principal Interviews you about this in order to get detals write the interview
PLEASE ANSWER ASAP Who is your hero? Why are they your hero? What does it mean to be a heroic? What are the qualities of a hero?
What is the difference between gross anatomy and microscopic anatomy?
help ill give brainlist!!!!!
Select the correct text in the passage.Which detail best develops the central idea?The Footprints of Timeby Charles Bancroft(excerpt from “Section VI. The Roman
Find the surface area of the composite figure
raise the difference of q and 5 to the 3rd power write as an expression
Which relation is also a function? { (1,0), (2,2), (1,3) } { (1, 2), (1, 4), (2, 6) } { (2, 1), (2, 2), (2, 3) } { (0, 0), (4, 0), (6, 0) }
