Math Problem Statement

Find the value of x in a triangle where the angles are represented as (3x - 33)°, (x + 11)°, and x°.

Solution

This image shows a triangle with angles labeled in terms of xx. We need to find the value of xx.

To solve this, we use the fact that the sum of all angles in a triangle is always 180°. The two angles provided in the image are (3x33)(3x - 33)^\circ and (x+11)(x + 11)^\circ. The third angle, which is marked as xx^\circ, can be represented as xx.

So, the equation based on the sum of the angles is:

(3x33)+(x+11)+x=180(3x - 33) + (x + 11) + x = 180

Let’s solve for xx:

3x33+x+11+x=1803x - 33 + x + 11 + x = 180

Simplify the terms:

5x22=1805x - 22 = 180

Add 22 to both sides:

5x=2025x = 202

Now divide both sides by 5:

x=2025=40.4x = \frac{202}{5} = 40.4

So, x=40.4x = 40.4^\circ.

Would you like further explanation or have other questions?

Here are 5 related questions for you to consider:

  1. What is the definition of an angle in a triangle?
  2. How do you check if the angles in a triangle add up to 180°?
  3. What happens if the sum of the angles is not equal to 180° in a triangle?
  4. How do you solve equations with variables in multiple terms?
  5. How do you apply angle relationships to real-life situations?

Tip: When solving angle problems, always double-check your angle sum, especially in polygons like triangles.

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Math Problem Analysis

Mathematical Concepts

Geometry
Angles in a Triangle
Linear Equations

Formulas

Sum of angles in a triangle = 180°

Theorems

Triangle Angle Sum Theorem

Suitable Grade Level

Grades 7-9