MatthewMorgan182 MatthewMorgan182

11-09-2015
Mathematics

contestada

x+y=12
x-y=2

Solve by elimination

Respuesta :

11-09-2015

[tex]x+y=12 \\ \underline{x-y=2} \\ x+x=12+2 \\ 2x=14 \\ x=\frac{14}{2} \\ x=7 \\ \\ x+y=12 \\ 7+y=12 \\ y=12-7 \\ y=5 \\ \\ \boxed{(x,y)=(7,5)}[/tex]

Answer Link

Otras preguntas

The number of children in the library was 3 times the number of adults. The total number of people at that library was 48. How many children were at the library

Which is the side length of a cube with a volume of 64 m3?

In what ways did the cultural development of vietnam resemble that of korea

Which expression is equivalent to 3(m − 3) + 4? 3m + 1 3m − 5 3m + 13 3m − 3

Which of the following is a solution of x2 + 4x + 6? −2 + i times the square root of 2 2 + i times the square root of 2 −2 + three i times the square root of 2

Dwayne's garden is triangle-shaped with two equal sides and a third side that is 4 ft more than the length of an equal side. If the perimeter is 49 ft, how long

using exactly four 4's and any operations[ ,-,x,/,()] write an expression to equal each of the following: 1 2 3 4 5

Classify the triangle by its angles based on the side lengths 4.2, 6.4, and 7.6

What was the point of Mike's drunken tirade to Bodnar?

The distance from the Earth to the sun is 93 million miles. In scientific notation that is _____ miles.