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OpenSessame

  • one year ago

A triangle has side lengths 10, 15, and 7. Is the triangle acute, obtuse, or right? Explain

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  1. OpenSessame
    • one year ago
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    MY ANSWER: Obtuse, because to find if the triangle is right, acute or obtuse you use the Pythagorean Theorem. You plug in the two smaller numbers in the equation to it looks like this, 7^2+10^2=12.2. Since the hypotenuse given in the problem is larger than the hypotenuse you get in the theorem it is obtuse. Can someone explain what I did wrong?

  2. shaagasda
    • one year ago
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    You're correct.

  3. OpenSessame
    • one year ago
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    But my teacher said it was wrong...

  4. shaagasda
    • one year ago
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    The answer would be awkward, I know.

  5. OpenSessame
    • one year ago
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    Awkward?

  6. shaagasda
    • one year ago
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    Lol... tell your teacher to look again.

  7. OpenSessame
    • one year ago
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    I did, and she still said it was wrong. That is why I am asking for help.

  8. shaagasda
    • one year ago
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    Stop cheating.

  9. shaagasda
    • one year ago
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    Cheating is so pathetic, seriously.

  10. shaagasda
    • one year ago
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    Don't cheat, you learn nothing by cheating.

  11. OpenSessame
    • one year ago
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    I'm not?

  12. OpenSessame
    • one year ago
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    @e.mccormick Can you help?

  13. shaagasda
    • one year ago
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    @e.mccormick Don't help him, he's cheating.

  14. OpenSessame
    • one year ago
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    I'm not cheating, so if you can't help please leave this thread alone.

  15. e.mccormick
    • one year ago
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    The only thing I see wrong is ytour math: \(7^2+10^2=12.2\) is not true. \(7^2+10^2=149\) is true and \(15^2=225\) is true and \(\sqrt{7^2+10^2}\approx12.2\) is true.

  16. OpenSessame
    • one year ago
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    Okay, thats it?

  17. e.mccormick
    • one year ago
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    If that is the exact answer you submitted, yes, that is why it would be marked wrong. you did not actually apply the Pythagorean Theorem in that equation. You came close, but forgot the root sign!

  18. OpenSessame
    • one year ago
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    Oh okay! Thanks!

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