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svet-max [94.6K]
3 years ago
6

Sergio solved the following equation and found the answer to be x = 2. Which choice represents the best way for Sergio to check

his answer? 4x – 6 = 2
Mathematics
1 answer:
MrMuchimi3 years ago
6 0
The best way for him to check his answer would be to simply plug in the value found for x into the equation. 

4(2) - 6 = 2

8 - 6 = 2

2 = 2
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Answer:

The 2nd root of 10, or 10 radical 2, or the square root of 10 is written as 2√10=√10=±3.162278.

Step-by-step explanation:

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Y = 4x – 18<br> y = -5x +9
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Answer:

(3, -6)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
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  • Multiplication Property of Equality
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<u>Algebra I</u>

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Step-by-step explanation:

<u>Step 1: Define Systems</u>

y = 4x - 18

y = -5x + 9

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Substitution</em>

  1. Substitute in <em>y</em> [2nd Equation]:                                                                           4x - 18 = -5x + 9
  2. [Addition Property of Equality] Add 5x on both sides:                                   9x - 18 = 9
  3. [Addition Property of Equality] Add 18 on both sides:                                   9x = 27
  4. [Division Property of Equality] Divide 9 on both sides:                                  x = 3

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Substitute in <em>x</em> [1st Equation]:                                                                           y = 4(3) - 18
  2. Multiply:                                                                                                             y = 12 - 18
  3. Subtract:                                                                                                            y = -6
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Answer:

1 5/6, 2 1/3, 2 3/5

Step-by-step explanation:D

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Another way to write this equation would be...

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5=3x-4=—5

Add 4 to both sides...

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Now divide by 3...

3=x= -1/3

So the solution is...

X={-1/3  3}

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Answer:

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