NyMoon
NyMoon
03-06-2015
Mathematics
contestada
−4x + y = 6
−5x − y = 21
Respuesta :
apologiabiology
apologiabiology
03-06-2015
assuming x=x and y=y in both equations
add them together
-4x+y=6
-5x-y=21 +
-9x+0y=27
-9x=27
divide by 9
-x=3
multiply -1
x=-3
subsiutte
-4x+y=6
-4(-3)+y=6
12+y=6
subtract 12
y=-6
x=-3
y=-6
the soultion set is in (x,y) form
(-3,-6)
Answer Link
VER TODAS LAS RESPUESTAS ( 98+ )
Otras preguntas
As a family’s basic needs are met jobs are given to the people who help provide these needs this is an example of? New businesses, taxes, demand for products, n
Liam is making chocolate chip cookies. The recipe calls for 1 cup of sugar for every 3 cups of flour. Liam only has 2 cups of flour. How much sugar should Liam
A factory worker is employed to make t-shirts. On average each t-shirt takes 3 1/2 minutes for cutting, 2 4/5 minutes for sewing and 4 1/6 minutes for finishing
What is a positive mutation?
What does it mean to share an amount in the ratio 3:7
why was the victory so important
Sonya went to the baseball game.she paid 10.50 for admission.she bought a drink for 2.75,a bag of popcorn for 4.60,and a hotdog 3.75.How much did she spend in t
what is the product of (x^2 + 3x + 1)(x^2 + x + 2)
what is the proper equation to use for finding the net force in the y direction
How has economic globalization contributed to inequalities around the world?