Explanation: Area of a triangle= 1/2base x height Plug in information 30=1/2 x 4 x h Solve 1/2 x 4 = 2 30= 2 x h Divide both side by two 30/2=2 x h/2 Solve: 15= h
To solve this, we just need to find the distance between the points A and B in the number line, and then, divide that distance by 2. Remember that the distance formula between tow point in the number line is: From our point we can infer that and , so lets replace the values:
Now, to find the coordinate of the midpoint, we just need to divide that distance by 2:
We can conclude that the coordinate of the point M, the midpoint of AB, is 4