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anonymous

  • one year ago

The lengths of two sides of a triangle are 10 inches and 4 inches. Which of the following dimensions is the third side of this triangle? 4 inches 5 inches 6 inches 7 inches

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  1. anonymous
    • one year ago
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    @Vocaloid @welshfella @Study_together

  2. Study_together
    • one year ago
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    I am pretty sure it is 7 because the average of numbers 10 and 4 is 7

  3. Study_together
    • one year ago
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    \[Average=10+4\div2\]

  4. mathstudent55
    • one year ago
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    This has nothing to do with average.

  5. Study_together
    • one year ago
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    So how come there is an option 7

  6. mathstudent55
    • one year ago
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    The rule is that the sum of the lengths of any two sides of a triangle has to be greater than the length of the third side.

  7. Study_together
    • one year ago
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    Yeah, sry, I didn't try that

  8. anonymous
    • one year ago
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    is it 7

  9. Study_together
    • one year ago
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    You are right!! :0 Really sorry

  10. Study_together
    • one year ago
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    @mathstudent55

  11. anonymous
    • one year ago
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    isi t 7777777777777777777777777777777777

  12. Study_together
    • one year ago
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    How did you get that answer : )]

  13. mathstudent55
    • one year ago
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    You are given 10 and 4 If you choose 4, you have 10, 4, 4. This cannot be bec 4 + 4 is not greater than 10. If you choose 5, you have 10, 4, 5. This cannot be bec 4 + 5 is not greater than 10. If you choose 6, you have 10, 4, 6. This cannot be bec 4 + 6 is not greater than 10. If you choose 7, you have 10, 4, 7. This is the answer bec all the inequalities below are true: \(4 + 7 \gt 10\) \(10 + 7 \gt 4\) \(4 + 10 \gt 7\)

  14. mathstudent55
    • one year ago
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    Yes, the answer is 7, but because of the reason I explained above.

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