Postley72 Postley72

15-07-2015
Mathematics

contestada

Two equations are given below: m + 4n = 8 m = n - 2 What is the Solution ?
a. 4,6
b. 2,4
c. 0,2
d. 6,8

Respuesta :

apologiabiology apologiabiology

15-07-2015

m+4n=8
m=n-2
we see that m=n-2
so we can subsitute 'n-2' for m in the first equation
(n-2)+4n=8
n-2+4n=8
5n-2=8
add 2 to both sides
5n=10
divide by 5
n=2
subsitute
n=2
m=n-2
m=2-2
m=0

m=0
n=2

the answer is c. 0,2

Answer Link

Otras preguntas

A space probe has two engines. Each generates the same amount of force when fired, and the directions of these forces can be independently adjusted. When the en

How many outcomes are there if you roll two dice with side sides

How would you describe the change in the arrangement of particles as heat energy and temperature increase?

I really need help on geometry

Describe an example of a fossil that consists of an entire organism

Compare the three types of volcanic mountains in terms of shape , type of eruption and the materials that make up volcano.

how many different (non-conguerent) triangles have integer side lengths and perimeter 2014

Help me please >.< ---------------------

There are 12 rabbits in a cage. The ratio of white rabbits to all rabbits is 3:4. How many white rabbits are in a cage?

if y=6x and x=1.5 find y