contestada

Solve the system by substitution. If the system is inconsistent or has dependent equations, say so.
y = 5x
20x - 4y = 0

Respuesta :

Space

Answer:

Dependent Equations

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

Algebra I

  • Terms/Coefficients
  • Coordinates (x, y)
  • Solving systems of equations by substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 5x

20x - 4y = 0

Step 2: Solve for x

Substitution

  1. Substitute in y [2nd Equation]:                                                                        20x - 4(5x) = 0
  2. Multiply:                                                                                                             20x - 20x = 0
  3. Combine like terms:                                                                                         0 = 0

Here we see 0 does indeed equal 0.

∴ our systems has an infinite amount of solutions.

Answer:

0

Step-by-step explanation:

y = 5x

  • 20 x - 4 y = 0

substitute the value of y in equation

  • = 20x - 4 ( 5x ) = 0

multiply to get 20x

  • = 20x - 20x = 0

collect like terms

  • = 0

we can see here that 0 indeed equal 0.

so, system has an infinite solutions.

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