anonymous
  • anonymous
Solve for x.
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
1 Attachment
zzr0ck3r
  • zzr0ck3r
Any ideas?
zzr0ck3r
  • zzr0ck3r
This is a right triangle and Pythagorean theorem tells us |dw:1436843339059:dw| So you have \(5^2+8^2=x^2\). Does this make sense?

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zzr0ck3r
  • zzr0ck3r
that should say, pythagorean theorem tells us \(a^2+b^2=c^2\)
UsukiDoll
  • UsukiDoll
after we figure out \[5^2 \] and \[8^2 \] we need x (or c or whatever side is missing) by itself so we need to square root both sides.
UsukiDoll
  • UsukiDoll
ok that's the c part we're missing (the longest side of the triangle-- hypotenuse)
anonymous
  • anonymous
5 squared + 8 squared = x squared 25 + 64 = c squared
UsukiDoll
  • UsukiDoll
good so far..
UsukiDoll
  • UsukiDoll
so what's 25+64 ?
UsukiDoll
  • UsukiDoll
|dw:1436843685798:dw|
anonymous
  • anonymous
I got 89
UsukiDoll
  • UsukiDoll
|dw:1436843762482:dw| take the square root of both sides. we need just a c...
UsukiDoll
  • UsukiDoll
draw \[\sqrt{}\] on both sides you can use my drawing from above.
anonymous
  • anonymous
idk how. how do you do that?
UsukiDoll
  • UsukiDoll
ok do you see that pencil on the top right hand corner of my drawing it will say "reply using drawing" click that
anonymous
  • anonymous
ooh okay I got it
UsukiDoll
  • UsukiDoll
so did you figure out what c is ? hint: it should be a square root and since that number is prime...that's about it.

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