Find the value of x.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
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Find the value of x.

The image shows a triangle with sides labeled with algebraic expressions:

1. The side on the left is labeled \(2x + 100\).
2. The base of the triangle is labeled \(9x - 20\).
3. The side on the right is labeled \(3x\).

There are two congruency markings on the longer sides of the triangle, suggesting that they are of equal length.

### Explanation:

This is likely an isosceles triangle due to the congruency markings, which means that two of its sides are equal in length. Given this information:

- The side labeled \(2x + 100\) is congruent to the side labeled \(3x\).

In solving problems related to this triangle, you would set these two expressions equal to find the value of \(x\):

\[2x + 100 = 3x\]

This allows you to solve for \(x\) and subsequently find the specific lengths of each side of the triangle. The expression for the base (\(9x - 20\)) can then be calculated using this value of \(x\).
Transcribed Image Text:The image shows a triangle with sides labeled with algebraic expressions: 1. The side on the left is labeled \(2x + 100\). 2. The base of the triangle is labeled \(9x - 20\). 3. The side on the right is labeled \(3x\). There are two congruency markings on the longer sides of the triangle, suggesting that they are of equal length. ### Explanation: This is likely an isosceles triangle due to the congruency markings, which means that two of its sides are equal in length. Given this information: - The side labeled \(2x + 100\) is congruent to the side labeled \(3x\). In solving problems related to this triangle, you would set these two expressions equal to find the value of \(x\): \[2x + 100 = 3x\] This allows you to solve for \(x\) and subsequently find the specific lengths of each side of the triangle. The expression for the base (\(9x - 20\)) can then be calculated using this value of \(x\).
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