Respuesta :

Space

Answer:

1260°

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

Geometry

  • Sum of Angles: 180(n - 2)

Step-by-step explanation:

Step 1: Define

Number of sides n = 9

Step 2: Find

  1. Substitute:                   180(9 - 2)
  2. Subtract:                      180(7)
  3. Multiply:                       1260°

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