Answer:
The answer is below
Step-by-step explanation:
The coordinate of the midpoint of a line is gotten by adding the values of the two end points and then dividing the result by 2.
Given that M is the midpoint of AB, A = 7y and B = 3x, hence the coordinate of point M is given as:
M = (A + B)/2 = (7y + 3x)/2
Also, C is the midpoint of AM, hence the coordinates of point C is given as:
Hence the coordinates for point C is 
Answer:
125, 105, 120
Step-by-step explanation:
You would first make an equation with what you know:
x + 45 + x + 25 + x + 40 = 350.
Now, you would simplify and add like terms.
3x + 110 = 350
Now, you would subtract 110 from both sides.
3x = 240
Now, you would divide both sides by 3.
x = 80
Now that you know what x is, simply plug it in to the respective equations for all three sides.
x + 45 would become 80 + 45, and add up to 125.
x + 25 would become 80 + 25, and add up to 105.
x + 40 would become 80 + 40, and add up to 120.
To check your work, you would now add the three totals.
125 + 105 + 120 = 350.
Ef/df
is completely correct
