The endpoints of AB are given. Find the coordinates of the midpoint M. Then find AB. Round your answers to the nearest tenth, if necessary.
A(2,-1), B(10,7)
M( , )
AB=
Midpt formula is (X1+X2/2, Y1+Y2/2) So then you plug in the numbers (2+10/2,-1+7/2) And then you solve Midpt=(6,3) To find AB we have to use distance formula d= the root^2 of X1-X2^2+Y1-Y2^2 So we plug in numbers 10-2^2+7+1^2( subtracting a negative # is the same as adding) Then you solve 64+64= 128 Square root(128)=11.3137085 Round it AB= 11
