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anonymous

  • one year ago

If a and b are two sides of a right triangle, find the length of the hypotenuse, c. a=8, b=4, c=?

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  1. anonymous
    • one year ago
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    so do you know the formula?

  2. anonymous
    • one year ago
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    a^2 + B^2=c^2

  3. anonymous
    • one year ago
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    heck no

  4. anonymous
    • one year ago
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    oh

  5. Purplemexican
    • one year ago
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    8^2+4^2=c^2 youll want to \[\sqrt{c}\]

  6. anonymous
    • one year ago
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    do whaa

  7. anonymous
    • one year ago
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    so just plug a and b in and then you take the square root of c

  8. anonymous
    • one year ago
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    how do you do that

  9. anonymous
    • one year ago
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    so 80?

  10. pooja195
    • one year ago
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    This is called the Pythagorean theorem \[\huge~\rm~a^2+b^2=c^2\] |dw:1439387408714:dw| \[\huge~\rm~8^2+4^2=c^2\] \[\huge~\rm~64+16=c\]

  11. pooja195
    • one year ago
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    Once you find 64+16 just square root it

  12. anonymous
    • one year ago
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    yes then you take the square root of that

  13. anonymous
    • one year ago
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    i dont know how to square root haha that is why i need help

  14. pooja195
    • one year ago
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    whats 64+16?

  15. Purplemexican
    • one year ago
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    \[8^2+4^2=c^2\ or \sqrt{80}\]

  16. pooja195
    • one year ago
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    right you might need to use a calc for that when you do you get a decimal \[\huge~\rm~8.944272 \]

  17. pooja195
    • one year ago
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    From there just take the first 3 numbers

  18. pooja195
    • one year ago
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    so about 8.94

  19. anonymous
    • one year ago
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    or you could simplify 80.

  20. anonymous
    • one year ago
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    so 9?

  21. pooja195
    • one year ago
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    \(\color{#0cbb34}{\text{Originally Posted by}}\) @pooja195 so about 8.94 \(\color{#0cbb34}{\text{End of Quote}}\) this

  22. anonymous
    • one year ago
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    guys this is a multiple choice and the answers aern't numbers like that

  23. anonymous
    • one year ago
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    \[\sqrt{16+5}=4\sqrt{5}\]

  24. anonymous
    • one year ago
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    that is the answer

  25. pooja195
    • one year ago
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    @kylefoster58 it would help if u put the answer choices

  26. anonymous
    • one year ago
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    sorry haha

  27. lfreeman1285
    • one year ago
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    Here you use the Pythagorean theorem which is a^2 + b^2 = c^2 a and b are the legs of the triangle while c is the hypotenuse. All you have to do is fill in the variables and solve for c. Therefore, (8)^2 + (4)^2 = c^2 64 + 16 = 80 But because 80 is c^2, you have to square root it. \[\sqrt{80}\] = \[4\sqrt{5}\] and that's your final answer.

  28. pooja195
    • one year ago
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    ^thats right

  29. anonymous
    • one year ago
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    its D.

  30. anonymous
    • one year ago
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    4 square root of 5 right

  31. anonymous
    • one year ago
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    thank yall again!!

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