   Chapter 10.1, Problem 21E ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698

#### Solutions

Chapter
Section ### Elementary Geometry for College St...

6th Edition
Daniel C. Alexander + 1 other
ISBN: 9781285195698
Textbook Problem
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# In Exercises 20 to 22, apply the Midpoint Formula.M 2.1 ,   - 5.7 is the midpoint of A B - , in which A is the point 1.7 ,   2.3 . Find the coordinates of B.

To determine

To find:

The coordinates of B using midpoint formula where M 2.1, -5.7 is the midpoint of AB-, in which A is the point 1.7, 2.3.

Explanation

The coordinates of A is (1.7, 2.3).

The coordinates of B is (x2, y2).

Midpoint of the points A and B is M 2.1, -5.7.

Determining coordinates of B using midpoint formula,

xm,ym=x1+x22,y1+y22

xm,ym are the midpoints.

x1, y1=(1.7, 2.3)

xm,ym=(2.1, -5.7).

x1+x22=xm

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