Respuesta :

Space

Answer:

A. x = 12

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

Trigonometry

  • [Right Triangles Only] Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

Step 1: Define

We are given a right triangle. We can use PT to solve for the missing side.

Step 2: Identify Conversions

Leg a = x

Leg b = 5

Hypotenuse c = 13

Step 3: Solve for x

  1. Substitute:                    x² + 5² = 13²
  2. Isolate x term:              x² = 13²- 5²
  3. Exponents:                   x² = 169 - 25
  4. Subtract:                       x² = 144
  5. Isolate x:                       x = 12

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