06-04-2018
Mathematics

contestada

Solve by substitution

4x+2y=10
x-y=13

Respuesta :

mkryukova19 mkryukova19

06-04-2018

4x+2y=10
x-y=13

x=13+y
4(13+y)+2y=10
52+4y+2y=10
52+6y=10
6y=-42
y=-7
x=13+y=13-7=6

Answer Link

lugipugi lugipugi

06-04-2018

Equation 1: 4x+2y=10
Equation 2: X-y= 13

From Equation 2:

X = 13+Y

Substitute X into Equation 1:

4(13+Y)+2Y=10
52+4Y+2Y=10
52+6Y=10
6Y=10-52
6Y=-42
Y=-7

Substitute Y into Equation 2:

X-(-7)= 13
X+7=13
X=6

Therefore: Y= -7; X=6

Answer Link

Otras preguntas

What were the 3 main types of trenches in ww1

How did nationalism lead to the rise of fascist dictators in Italy and Germany?

according to the theory of plate tectonics, the distance between two continents on opposite sides of a mid-oceanic ridge will generally..

New York's 300m high Citicorp tower oscillates in the wind with a period of 6.8s. Calculate the frequency of the vibration.

describes an organism that can exist only as a group of cells

A polish astronomer who theorized that the earth revolved around the sun

How did Egypt gain wealth under the leadership of Hatshepsut

what is the awnser for 32 >8x

The most common type of ecosystem in Africa is a. tropical rain forest. c. desert scrub. b. tropical grassland. d. desert.

Is 44/75 and 8/9 in there simplest form