anonymous
  • anonymous
Question is in comments
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1353013284316:dw|
amistre64
  • amistre64
we can equate vertex with vertex then; a=p b=q c=r for starters
amistre64
  • amistre64
since b=q, and they give you eqaustions for b and q; then write the equations equal to each other and it should be a simple matter to solve for v

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anonymous
  • anonymous
yeah but Im not sure how to do that
amistre64
  • amistre64
what is the equation for b?
anonymous
  • anonymous
5v+6
amistre64
  • amistre64
what is the equation for q? since b = q then its also true that: (equation for b) = (equation for q)
amistre64
  • amistre64
good, and can you finish the setup? ill help you thru it once i see that you can at least set it up
anonymous
  • anonymous
8v-9 is Q
anonymous
  • anonymous
so 8v-9=5v+6??
amistre64
  • amistre64
good, then (equation for b) = (equation for q) 5v+6 = 8v-9
anonymous
  • anonymous
so then do you subtract 5 from both sides?
amistre64
  • amistre64
close, there is a v stuck to the 5, so lets subtract 5v from each side for starters
amistre64
  • amistre64
5v+6 = 8v-9 -5v -5v ---------------- 6 = 3v - 9 what do you think another good move would be?
anonymous
  • anonymous
add 9 to both sides?
amistre64
  • amistre64
correct 6 = 3v - 9 +9 +9 ----------- 15 = 3v only one more move left, what do you think we should do?
anonymous
  • anonymous
divide 3 on both sides to get v
amistre64
  • amistre64
excellent 15/3 = 3v/3 5 = v so now that we know a normal looking value for v, we can use it to find the values of b and q right?
anonymous
  • anonymous
yeah
amistre64
  • amistre64
then what is our solution :)
anonymous
  • anonymous
Like plug 5 into the original problem?
amistre64
  • amistre64
yes, and it should work in either equation for b or for q and give us the same value
anonymous
  • anonymous
5(5)-9?
amistre64
  • amistre64
it looks like you might have blended the 2 equations into an abomination of desolation :) b = 5v+6 = 5(5)+6 q = 8v-9 =8(5)-9
anonymous
  • anonymous
so 16 and 31? I feel like thats totally off
amistre64
  • amistre64
b = 5v+6 = 5(5)+6 = 25 + 6 = 31 q = 8v-9 =8(5)-9 = 40 - 9 = 31 b = q = 31
anonymous
  • anonymous
OH haha DUH sorry I got it now!
amistre64
  • amistre64
;) good luck
anonymous
  • anonymous
Thank you!

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