waheguru
  • waheguru
Can someone pleas ehelp me with this question, i am confused. Its solving porportions and i am doing 8:4:x = 2: y:6 how do i solve this?
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
It turns out into a system of equations.
anonymous
  • anonymous
\[ 8:4:x=c(2:y:6) \\ 8 = 2c \\ 4 = cy\\ x = 6c \\ \]
anonymous
  • anonymous
First solve for c, then solve for x and y.

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waheguru
  • waheguru
where does the c come from?
skullpatrol
  • skullpatrol
The alphabet.
anonymous
  • anonymous
c is there to represent the fact that two proportional things are going to be equal if you multiply one of them by c.
skullpatrol
  • skullpatrol
You need to find a c such that the above equation is true.
waheguru
  • waheguru
I know a/b = c/d and a*d=b*c but this euqstion had 3 terms which is confusing me
skullpatrol
  • skullpatrol
Have you solved for c?
waheguru
  • waheguru
umm.
waheguru
  • waheguru
im not sure how
anonymous
  • anonymous
\[ 8=2c \]
anonymous
  • anonymous
\[ \frac{8}{2} = \frac{4}{y} \\ \frac{8}{2} = \frac{x}{6} \]
waheguru
  • waheguru
but how does 8 = 2c?
skullpatrol
  • skullpatrol
$$8=2c$$ $$\frac{1}{2}*8=\frac{1}{2}*2c$$ $$4=(\frac{1}{2}*2)c$$ $$4=1c$$ $$4=c$$
skullpatrol
  • skullpatrol
$$ 8:4:x = 2: y:6$$ $$8:4:x = c(2: y:6)$$
skullpatrol
  • skullpatrol
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