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somebodys_heartbrake Group Title

Find c if a = 7 and b = 9. Right triangle with sides a, b, and c. Side c is opposite the right angle. A. c = 16 B. c = 4 C. c = 3 times the square root of 7 D. c = the square root of130

  • one year ago
  • one year ago

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  1. somebodys_heartbrake Group Title
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    • one year ago
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  2. RandomFriend Group Title
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    Use the pythagoreon theroem!

    • one year ago
  3. RandomFriend Group Title
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    Did you? What's up? Let's Math.

    • one year ago
  4. somebodys_heartbrake Group Title
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    um like this A^2 +B^2= C^2

    • one year ago
  5. RandomFriend Group Title
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    You got it. You are given A and B. Let's do it. 7^2 + 9^2 = C^2.

    • one year ago
  6. somebodys_heartbrake Group Title
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    49+81

    • one year ago
  7. Azteck Group Title
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    @somebodys_heartbrake that's exactly the same question as the previous one except this one has different values. And now you don't know square roots and squaring which should of been taught in primary/elementary school.

    • one year ago
  8. RandomFriend Group Title
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    Sweet whats 49+81?

    • one year ago
  9. AravindG Group Title
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    sweet? o.O

    • one year ago
  10. somebodys_heartbrake Group Title
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    130

    • one year ago
  11. RandomFriend Group Title
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    Alright so far we know that 130 = C^2. What's C???

    • one year ago
  12. AravindG Group Title
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    @Azteck you are right infact i had replied in previos question and when i saw this i thought my reply got deleted :O .

    • one year ago
  13. Azteck Group Title
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    I think it's a different question, but then it's just using the same format as the previous one.

    • one year ago
  14. RandomFriend Group Title
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    Alright so far we know that C^2 = 130. Let's find C. Do you know how to find square roots, or are you a little bit rusty?

    • one year ago
  15. somebodys_heartbrake Group Title
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    idk sorry

    • one year ago
  16. RandomFriend Group Title
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    Do you know the square root of say 9? Or do you know nothing about square roots? I don't care either way so just be honest

    • one year ago
  17. RandomFriend Group Title
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    \[\sqrt{9}\]

    • one year ago
  18. somebodys_heartbrake Group Title
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    idk :/

    • one year ago
  19. RandomFriend Group Title
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    haha alright :) Let's learn some square roots then. I'm not a math teacher but i'll try my best.

    • one year ago
  20. somebodys_heartbrake Group Title
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    ok thanks for helping btw

    • one year ago
  21. RandomFriend Group Title
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    So basically a square root is " What number multiplied by itself will give me this number"

    • one year ago
  22. AravindG Group Title
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    @RandomFriend i appreciate your effort to help the asker get to the answer ..make sure you do not spoonfeed anyone in the process ,happy studying! :)

    • one year ago
  23. RandomFriend Group Title
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    @AravindG Thanks! Happy internet moderating.

    • one year ago
  24. RandomFriend Group Title
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    Anyway another way to look at square roots is "What number SQUARED, equals this number?" So lets look at \[\sqrt{4}\] . 2 squared . Aka 2*2 = 4

    • one year ago
  25. somebodys_heartbrake Group Title
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    wouldnt it be 3 to the first 1 u asked

    • one year ago
  26. RandomFriend Group Title
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    Yeah exactly. 3*3 = 9. So the square root of 9 is three.

    • one year ago
  27. somebodys_heartbrake Group Title
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    ok

    • one year ago
  28. RandomFriend Group Title
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    Alright it works with letters or "variables" too. What's the square root of \[\sqrt{x^2}\] ?

    • one year ago
  29. somebodys_heartbrake Group Title
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    x?

    • one year ago
  30. RandomFriend Group Title
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    Nice. X*X = X^2. How about something that applies to us. What is the \[\sqrt{C^2}\]

    • one year ago
  31. somebodys_heartbrake Group Title
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    c

    • one year ago
  32. AravindG Group Title
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    well done @somebodys_heartbrake and @RandomFriend :)

    • one year ago
  33. RandomFriend Group Title
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    Nailed it. So we left off at \[C^2 = 130\]. What happens if we take the square root of both sides?

    • one year ago
  34. somebodys_heartbrake Group Title
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    um not sure

    • one year ago
  35. RandomFriend Group Title
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    Write it out for me. Put a square root symbol around both sides.

    • one year ago
  36. somebodys_heartbrake Group Title
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    idk how to do that

    • one year ago
  37. AravindG Group Title
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    ......................

    • one year ago
  38. RandomFriend Group Title
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    Alright so we are just going to draw a square root sign around both sides. You can do it. I'll do it first. \[\sqrt{C^2} = \sqrt{130}\]

    • one year ago
  39. AravindG Group Title
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    @somebodys_heartbrake please make a thorough reading on this tutorial http://www.mathsisfun.com/square-root.html

    • one year ago
  40. Azteck Group Title
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    @somebodys_heartbrake wants to know how to write a square root sign like what @RandomFriend did above. I don't think @somebodys_heartbrake knows how to use the equation editor.

    • one year ago
  41. RandomFriend Group Title
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    I dont care if you don't know how to use the equation thing. As long as you get it. Do you see how i got my equation above?

    • one year ago
  42. RandomFriend Group Title
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    Alright I'ma move on. from here \[\sqrt{C^2} = C. \]. This givese us C = sqrt(130). Which was one of our answers I believe.

    • one year ago
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