Http://skywalker.cochise.edu/wellerr/students/measure-quake/paper.htm go here and all the answers are there
6 is french and african 7 is african catholism
Seismographs and they check local springs for sulferic acids.
Given Parameters;
Coordinates = (-8,6), (5,-7)
x₁ = -8 y₁ = 6
x₂ = 5 y₂ = -7
Unknown:
The midpoint of the line = ?
Solution:
The midpoint of any two points is given as;
x
, y
=
,
Input the parameters and solve;
x
, y
=
, 
=
, 
The midpoint between the two points are
, 