anonymous
  • anonymous
Please! help me check my answe,do even only, 2) Degree 4) GCF 6) Polynomial 8) Simplify 10) Synthetisc dubtitution
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
http://i1142.photobucket.com/albums/n608/nancylam67/page374.jpg
anonymous
  • anonymous
sorry subtitution not dubtitution
radar
  • radar
8 = 8 10=4

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anonymous
  • anonymous
not solve, just fill the word in the blank
anonymous
  • anonymous
I need check my answer if I correct
radar
  • radar
8, Simplify 4, synthetic division
radar
  • radar
seems the choices are too restricted!!
anonymous
  • anonymous
number 10 Synthetisc dubtitution ?
radar
  • radar
Not for sure, have you googled those words?
anonymous
  • anonymous
no
anonymous
  • anonymous
you have time look another problem?
radar
  • radar
I don't see any on the list that would match "degree"
radar
  • radar
I may be of help, what is the probllem?
anonymous
  • anonymous
you want me sent you a lesion degree?
radar
  • radar
the degree of an equation depends on the highest exponent of the variable, and there was nothing like that on the list. What is the next problem?
anonymous
  • anonymous
http://i1142.photobucket.com/albums/n608/nancylam67/Page373.jpg
radar
  • radar
I have looked it over. Here is what I have come up with: Let x = longer leg Let y= shorter leg then 24-(x+y)= hypotenuse You with me so far. Ask question now about what I have set up for solving this problem.
radar
  • radar
We are told the following: 3x-2y=24-(x+y)+3 Do you see where that come from?
anonymous
  • anonymous
P: x+y+z=24 The given: (3*x)-(2*y)=h+2 I know from here ,But I don't know next
anonymous
  • anonymous
sorry z for hypotenuse The given: (3*x)-(2*y)=z+2
radar
  • radar
O.k I put 3 where it should be 2, my equation should be 3x-2y = 24-x-y +2
radar
  • radar
then we would have 4x+3y = 26 That is an equation with two unknowns we need to make another equartion. But first need to fix another mistake. 4x-y=26 Do you see why 4x-y=26 cm????
anonymous
  • anonymous
yes I see
radar
  • radar
This means y=4x-26. Problem says it is a right triangle we know that by pythagorem theorem hypotenuse is equal to the square root of the sum of the legs squared or\[\sqrt{x ^{2}+y ^{2}}\]
radar
  • radar
we substitute for y and get this: \[hyp=\sqrt{x ^{2}+(4x-26)^{2}}\] We also know that the hypotenuse is equal to 24-x-y substituting for y we now have hypotnuse=24-x-(4x-26) hyp=-5x+50 \[-5x+50=\sqrt{x ^{2}+(4x-26)^{2}}\]Now we have an equality with one unknown
radar
  • radar
The radical should extend completely across\[-5x+50=\sqrt{x ^{2}-(16x ^{2}-208x+676}\]
anonymous
  • anonymous
Arte you still there?
anonymous
  • anonymous
From here I just solve for x?
radar
  • radar
square both sides of the equation \[25x ^{2}-500x+2500=x ^{2}-16x ^{2}-208x+676\] This thing keeps getting bigger and bigger!!!\[40x ^{2}-292x+1824=0\] A quadratic that should be solvable lol
anonymous
  • anonymous
Ok. thank I can do from now
radar
  • radar
You can divide by 4 and get \[10x ^{2}-73x+456=0\]
anonymous
  • anonymous
I have one more very quick, can you show me how to write faction on the bottom of the chat, I keep play but I can do it.
radar
  • radar
I don't know how to write frac on the equation line, if you google latex you will find the math languate they use here.
anonymous
  • anonymous
on the bottom of the chat window
anonymous
  • anonymous
it say Equation
anonymous
  • anonymous
I see every people write fraction
radar
  • radar
loki showed me how, but I forget, if you look at "latex" it will explain it.
anonymous
  • anonymous
it Ok I will ask pepole around, thank you for spend time solve my problem
anonymous
  • anonymous
I have to go now bye
radar
  • radar
Ok, somewhere there is an error in the solution as the root is a complex value. I will loolk it over and see where it went wrong.
radar
  • radar
There were errors, the final quadratic should appear as:\[8x ^{2}-292x+1824=0\] When solved, you will find x=8 (longer leg) substitute x in the y=4x-26=32-26=y y=6 cm (shorter leg) 24-6-8=10cm the hypotenuse It checks out.

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