Respuesta :

Space

Answer:

B. 81

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

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

Identify

√x + 3 = 12

Step 2: Solve for x

  1. [Subtraction Property of Equality] Subtract 3 on both sides:                        √x = 9
  2. [Equality Property] Square both sides:                                                           x = 81

Answer:

B

Step-by-step explanation:

Given

[tex]\sqrt{x}[/tex] + 3 = 12 ( subtract 3 from both sides )

[tex]\sqrt{x}[/tex] = 9 ( square both sides )

x = 9² = 81 → B

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