anonymous
  • anonymous
witch method is being used, subtraction or elimination? M=MP3 H=headphones 5x’s the cost of mp3 players + 8x’s the total of a set of headphones that = $840 5m+8h=840 3x’s the total cost of an mp3 + 4x’s the cost of a set of headphones = $480 3m+4h= 480 Equations 5m+8h=840 5m=840-8h M=(1/5)*(840-8h) 3m+4h=480 3*(1/5)*(840-8h) +4h=480 3*(840-8h)+20h=2400 2520-24h+20h=2400 -4h=-120 H=30 M=(1/5)*(840-8h) M=(1/5) *(840-8*(30)) M=(1/5)*(840-240) M=(1/5)*(600) M=120
Mathematics
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
NotTim
  • NotTim
That's a super long formula...
NotTim
  • NotTim
unless im reading that wrong. HEY. DONT TRIPLE POST
anonymous
  • anonymous
I know and i got the answer I just dont know witch formaula i used, i just did it.

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More answers

anonymous
  • anonymous
M=MP3 H=headphones 5x’s the cost of mp3 players + 8x’s the total of a set of headphones that = $840 5m+8h=840 3x’s the total cost of an mp3 + 4x’s the cost of a set of headphones = $480 3m+4h= 480 Equations 5m+8h=840 5m=840-8h M=(1/5)*(840-8h) 3m+4h=480 3*(1/5)*(840-8h) +4h=480 3*(840-8h)+20h=2400 2520-24h+20h=2400 -4h=-120 H=30 M=(1/5)*(840-8h) M=(1/5) *(840-8*(30)) M=(1/5)*(840-240) M=(1/5)*(600) M=120
NotTim
  • NotTim
oh. that's your work.
anonymous
  • anonymous
yes, but idk what elemination is, and i dont wanna say subtract if its also elemination
anonymous
  • anonymous
whta.the.hay.
NotTim
  • NotTim
he showed his work in the question box.
anonymous
  • anonymous
huh
anonymous
  • anonymous
is it elemination or subtraction?!?!?!?!
NotTim
  • NotTim
give me a moment. IT's a bit confusing to read.
NotTim
  • NotTim
sorry, but I can't udnerstand what's going on.
NotTim
  • NotTim
i was going to say substitution, but that must be way off.
NotTim
  • NotTim
hey, you able to describe to me what's happening there?
anonymous
  • anonymous
heres the question that i answered
anonymous
  • anonymous
Translate the following into a system of equations, then solve it: A customer walks into an electronics store and buys five MP3 players and eight sets of headphones, paying $840. A second customer buys three MP3 players and four sets of headphones, and pays $480. How much does an MP3 player cost? How much does a set of headphones cost?
anonymous
  • anonymous
and i just did it, i dont know what i used I JUST DID THE PROBLEM. M=MP3 H=headphones 5x’s the cost of mp3 players + 8x’s the total of a set of headphones that = $840 5m+8h=840 3x’s the total cost of an mp3 + 4x’s the cost of a set of headphones = $480 3m+4h= 480 Equations 5m+8h=840 5m=840-8h M=(1/5)*(840-8h) 3m+4h=480 3*(1/5)*(840-8h) +4h=480 3*(840-8h)+20h=2400 2520-24h+20h=2400 -4h=-120 H=30 M=(1/5)*(840-8h) M=(1/5) *(840-8*(30)) M=(1/5)*(840-240) M=(1/5)*(600) M=120
NotTim
  • NotTim
It looks like substitution.
anonymous
  • anonymous
I agree!
NotTim
  • NotTim
So..I'm actually right, @Chlorophyll ?
anonymous
  • anonymous
Absolutely, I'm tearing out my eyes to find it out finally :(
anonymous
  • anonymous
5m=840-8h M=(1/5)*(840-8h)
anonymous
  • anonymous
Still don't understand why people go super long way instead of 4 lines ???
anonymous
  • anonymous
@NotTim you're greatly deserved medal for being pioneer of analyzing this "scary" post :)
NotTim
  • NotTim
Thanks. I do what I can to help on Os.
anonymous
  • anonymous
I've never done this kind of math so i go the long way. MY BAD!

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