Solve for x. 5x° (6x+30)° 45°

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
Problem 1CT
Question
**Solve for x**

In the diagram, there is a triangle \( \triangle ABC \) with the following angles:

1. Angle \( CAB \) is labeled as \( 5x^\circ \).
2. Angle \( ABC \) is labeled as \( 45^\circ \).
3. Angle \( ACD \) forming a straight line is labeled \( (6x + 30)^\circ \).

The task is to solve for the value of \( x \).

**Explanation of the Diagram:**

- The triangle is labeled with points A, B, and C.
- There is a point D that forms a linear pair with point C, suggesting \( \angle ACD \) is supplementary to \( \angle ACB \).
- Since a straight line measures \( 180^\circ \), the equation can be set up as:

\[ \angle ACB + \angle ACD = 180^\circ \]

This gives us the equation:

\[ 5x + 45 + (6x + 30) = 180 \]

After simplifying, solve for \( x \):

\[ 11x + 75 = 180 \]

\[ 11x = 105 \]

\[ x = \frac{105}{11} \]

**Final Equation:**

\[ x = \frac{105}{11} \]

Enter the value of \( x \) in the provided box.
Transcribed Image Text:**Solve for x** In the diagram, there is a triangle \( \triangle ABC \) with the following angles: 1. Angle \( CAB \) is labeled as \( 5x^\circ \). 2. Angle \( ABC \) is labeled as \( 45^\circ \). 3. Angle \( ACD \) forming a straight line is labeled \( (6x + 30)^\circ \). The task is to solve for the value of \( x \). **Explanation of the Diagram:** - The triangle is labeled with points A, B, and C. - There is a point D that forms a linear pair with point C, suggesting \( \angle ACD \) is supplementary to \( \angle ACB \). - Since a straight line measures \( 180^\circ \), the equation can be set up as: \[ \angle ACB + \angle ACD = 180^\circ \] This gives us the equation: \[ 5x + 45 + (6x + 30) = 180 \] After simplifying, solve for \( x \): \[ 11x + 75 = 180 \] \[ 11x = 105 \] \[ x = \frac{105}{11} \] **Final Equation:** \[ x = \frac{105}{11} \] Enter the value of \( x \) in the provided box.
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