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Spicytaco1

  • one year ago

What is the value of the expression picture attached

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  1. Spicytaco1
    • one year ago
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  2. mathstudent55
    • one year ago
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    Do you know PEMDAS?

  3. anonymous
    • one year ago
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    \[\frac{ 10-2\times4 }{ 2 }\]\[\frac{ 10-8 }{ 2 }\]\[\frac{ 2 }{ 2 }\]\[1\]

  4. mathstudent55
    • one year ago
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    That is the order of operations.

  5. Spicytaco1
    • one year ago
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    @mathstudent55 yes

  6. anonymous
    • one year ago
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    PEMDAS will help you make sure you get the correct answer. If you don't use it then you'll get a completely different answer.

  7. anonymous
    • one year ago
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    Use PEMDAS in this problem. First you would need to multiply the numerator before you can subtract.

  8. anonymous
    • one year ago
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    Once you multiply you can subtract. Lastly you just need to divide to get your answer.

  9. mathstudent55
    • one year ago
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    Also, a fraction means division and parentheses. \(\dfrac{10 - 2 \cdot 4}{2} = (10 - 2 \cdot 2) \div 2\) Notice how the numerator of the fraction is all grouped in parentheses. This is what I meant before when I wrote that a fraction also means parentheses in addition to division.

  10. mathstudent55
    • one year ago
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    \(\dfrac{10 - 2 \cdot 4}{2} = (10 - 2 \cdot 2) \div 2 =\) \(= (10 - 8) \div 2 = 2 \div 2 = 1\)

  11. anonymous
    • one year ago
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    (10−2⋅2)÷2 What happened here? @mathstudent55

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