Question

Find X
Coordinates are: 3x, 3x+10, 2x+10

Answer 1

D. 20

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Equality Properties

Geometry

• All angles in a triangle add up to 180°

Explanation:

Step 1: Set Up Equation

3x + 3x + 10 + 2x + 10 = 180

Step 2: Solve for x

1. Combine like terms: 8x + 20 = 180
2. Isolate x term: 8x = 160
3. Isolate x: x = 20