   Chapter A.2, Problem 35E Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

Solutions

Chapter
Section Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085
Textbook Problem

In Exercises 33 to 36, find the value of the indicated variable for each given formula. y ,  if  m = 1 2 ( x − y ) , m = 23 , and  x = 78

To determine

To find:

The value of the indicated variable y for the given formula.

Explanation

For evaluating the expression:

1) In an algebraic expression, letters can stand for numbers.

2) Substitute a specific value for each variable.

3) Then perform the operations.

Calculation:

Given:

Formula: m=12(xy)

Substitute m=23, and x=78 in the given formula, we get

m=12(xy)23=12(78y)

Multiply by 2 on both sides, we get

232=2×12<

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