227Views20Replies

# Problem #3

3: Find x

Solution: x = 5

a^{2} + b^{2} = c^{2}

a=3

b=4

c=x

3^{2} + 4^{2} = x^{2}

9+16 = x^{2}

25 = x^{2}

sqrt(25) = x

5 = x

x = 5

:-)

227Views20Replies

3: Find x

Solution: x = 5

a^{2} + b^{2} = c^{2}

a=3

b=4

c=x

3^{2} + 4^{2} = x^{2}

9+16 = x^{2}

25 = x^{2}

sqrt(25) = x

5 = x

x = 5

:-)

## Comments

12 years ago

X can also be

-5Reply 12 years ago

Lengths can't be negative.

Reply 12 years ago

You never mentioned lengths.

Reply 12 years ago

x was the side-length of a "3-4-5" right triangle.

Reply 12 years ago

Never said that

Reply 12 years ago

This was in response to the group photo.

Reply 12 years ago

What group photo?

Reply 12 years ago

The photo of this group, circa December 23

^{rd}, 2006.https://www.instructables.com/group/math/

12 years ago

Thats a standard Pythag triangle isn't it?

14 years ago

Well, the question did not state "give the value of x".

Reply 14 years ago

Yes. I liked Prony's answer. It showed creativity and an certain amount of Smart Ass. "Find x", "It's Here! -->" lol

Reply 14 years ago

Well, it is not my answer. There is a whole exam paper full of those type of ansvers. I'll see if I can put the link up.

Reply 14 years ago

Found them via Digg

I like the

_1_

n sin x = six = 6

Reply 14 years ago

There are some more at :

http://www.murderousmaths.co.uk/alg.htm

And the file I got the picture from

Reply 14 years ago

It said "3. Find x"

14 years ago

Holy crap you guys make my head hurt :P LOL

14 years ago

a2 + b2 = c2

a=3

b=4

c=x

By Pythagorean theorem -- 3-4-5 triple

x=5

using less lines! :P -- Curious, why did you post this?

Reply 14 years ago

I was bored, and the picture for the Math Group was this problem, so I solved it. Boredom is the spice of life :-P

Reply 14 years ago

slaps head... haha :P

14 years ago

You forgot your units -5 points, ;=)