Answer:
A coordinate system,or Coordinate plain ,is used to locate points in a 2-dimensional plane.
explanation:
A coordinate plain is formed by the intersection of two lines.One line is vertical and the other is horizontal.The vertical line is called y- axis and the horizontal line is called x-axis. It is two dimensional plane,which means it has length and breadth but no depth.The point where both the lines intersect is called the point of origin.Any point can be located on the coordinate plain by numbers(x,y). These pair of numbers are called coordinates.
It is used to plot points and lines.This system explains algebraic concepts .it has four equal divisions called quadrants namely I ,II,III,IV.
The difference is 180 is the correct answer for the problems
Given:
Consider the below figure attached with this question.
To find:
The value of 
.
Solution:
The given functions are:
Now,
We know that,
Adding 3 on both sides, we get
So, for all values of x.
Hence, the correct option is A.
4 hours? i may be wrong
i did - 60 * 15
seems about right, since 50% would be 7.5 hours?
We can use proportions
12/x = 10/5
12*5 = 10x
60 = 10x
x = 6
Check
12/6 = 10/5
2 = 2
