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help123please.
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I didn't type the question since its on the photo.
help123please.
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I'm reading that ^
help123please.
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One second.
help123please.
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I'll try to solve.
help123please.
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Will you give me a minute?
timo86m
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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?
timo86m
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on previous one i forgot to square the blue blvd one
help123please.
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Okay. Let me try to solve,alright?
timo86m
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ok :)
help123please.
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Thank you,sir.
help123please.
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so basically 144=a^2+13^2?
timo86m
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YES
help123please.
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Okay, ty. Let me solve for A now,then.
help123please.
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I got '5' as 'a^2'.
timo86m
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I think your diagram might be wrong tho
help123please.
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Really?
help123please.
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How's it wrong?
timo86m
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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.
help123please.
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No, that's how it is on my sheet. That's okay. i can leave it as is.
help123please.
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Good observation, though.
help123please.
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so... would it be '144=5^2+13^2'?
timo86m
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it is wrong either blue is longer. But for sure westerfield is longer.
timo86m
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5^2+13^2=194 nott 144 silly
help123please.
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Oh right i forgot to square it.
help123please.
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Sorry bout that...
help123please.
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wait wait wait..
help123please.
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how did you get 194?
timo86m
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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
help123please.
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Oh right....Okay.
help123please.
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Fine, whatever you think is best.
help123please.
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Let's make blue C.
timo86m
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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 :)
help123please.
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Okay. So...
help123please.
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This might take a min or 2
timo86m
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solve for b
help123please.
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Yes,one second.
help123please.
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Is it 5?
timo86m
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yup
help123please.
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YESSSS!
timo86m
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|dw:1364431455866:dw|
help123please.
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I also got that the first time.
help123please.
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5 as the missing value, I mean.
help123please.
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Thank you very much for your assistance.
help123please.
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144 = a^2+13^2 --> a=5^2
timo86m
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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.
help123please.
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no....
help123please.
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That was a long reply. LOL.
help123please.
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Thanks anyhow. So the final equation would be 169=144+b^2 --> b=5?
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@timo86m help please
timo86m
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Yes now you just add up the lengths of the streets to see which is longer route.
help123please.
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Okay....
timo86m
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westerfield and blue =13+5 = 18
blue to white=5+12=17
help123please.
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there is a one mile difference.
timo86m
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yup :D lol you got ahead of me :) But anyhoo i think this is best.
help123please.
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Nope, you're way ahead of me.
help123please.
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I just did first grade subtraction.
help123please.
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So, how would you state the answer?
timo86m
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joe will run one mile further along his new route
help123please.
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ok.thanks!