## help123please. 2 years ago To be deleted/closed.

I didn't type the question since its on the photo.

One second.

I'll try to solve.

Will you give me a minute?

6. timo86m

oops error the question is easy use the pythogoread formula c^2=a^2+b^2 white dr is c westerfield is b and blue is a now we plug in. 144= blue^2 + 13^2 ^ that is already squared for you. ^ that is westerfield. Solve for blue. Do you know how?

7. timo86m

on previous one i forgot to square the blue blvd one

Okay. Let me try to solve,alright?

9. timo86m

ok :)

Thank you,sir.

so basically 144=a^2+13^2?

12. timo86m

YES

Okay, ty. Let me solve for A now,then.

I got '5' as 'a^2'.

15. timo86m

I think your diagram might be wrong tho

Really?

17. timo86m

How's it wrong?

19. timo86m

the longest street is suppose to be the c in the theorem. white dr is sqrt (144)= 12 but westerfield is 13 which is longer.

No, that's how it is on my sheet. That's okay. i can leave it as is.

Good observation, though.

so... would it be '144=5^2+13^2'?

23. timo86m

it is wrong either blue is longer. But for sure westerfield is longer.

24. timo86m

5^2+13^2=194 nott 144 silly

Oh right i forgot to square it.

Sorry bout that...

wait wait wait..

how did you get 194?

29. timo86m

you gave me 194 5^2+13^2 you gave that 25+169=194 You cant solve it until you fix the streets. You need to know the longest street. You cant just pick it. white dr =12 but wester field is 13. 13 should be c or blue but we dont even know what blue is. we can make blue c also to see if it works

Oh right....Okay.

Fine, whatever you think is best.

Let's make blue C.

33. timo86m

make westerfield c and the numbers work better :) c^2= b^2+b^2 169=144+b^2 ^ wester field 13^2 is given so square it to get 169 ^ white 144 was given and already squared ^ blue now solve :)

Okay. So...

This might take a min or 2

36. timo86m

solve for b

Yes,one second.

Is it 5?

39. timo86m

yup

YESSSS!

41. timo86m

|dw:1364431455866:dw|

I also got that the first time.

5 as the missing value, I mean.

Thank you very much for your assistance.

144 = a^2+13^2 --> a=5^2

46. timo86m

no but it did not work out cuzz you said "so... would it be '144=5^2+13^2'?" no 5^2+13^2=25+169 is not 144 what you were actually getting was imaginary result. a 5i. what you did was something like this 144=a^2 +13^2 simplifies to 144=a^2+169 then you subtract 169 from both sides 144-169=a^2 -25=a^2 then you try to take sqrt of -25 but how? you cant take sqrt of negatives. you can but it is out of your scope. Unless they taught you about imaginaries already.

no....

That was a long reply. LOL.

Thanks anyhow. So the final equation would be 169=144+b^2 --> b=5?

51. timo86m

Yes now you just add up the lengths of the streets to see which is longer route.

Okay....

53. timo86m

westerfield and blue =13+5 = 18 blue to white=5+12=17

there is a one mile difference.

55. timo86m

yup :D lol you got ahead of me :) But anyhoo i think this is best.

Nope, you're way ahead of me.

I just did first grade subtraction.

So, how would you state the answer?

59. timo86m

joe will run one mile further along his new route