anonymous
  • anonymous
help? In a certain county, the number of charter schools is 4 less than twice the number of alternative schools. We know that there are 48 charter schools in the county. How many alternative schools are in the county? 52 22 36 26 i tried 48 + 48 = 94 then going to 94 - 4 to get 90 but that's not an answer...???
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Vocaloid
  • Vocaloid
let's define our variables let a = number of alternative schools let c = number of charter schools with me so far?
anonymous
  • anonymous
yes i am
Vocaloid
  • Vocaloid
ok, it says that ""number of charter schools is 4 less than twice the number of alternative schools." so c = 2a - 4, with me so far?

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anonymous
  • anonymous
yep. thats what ive already done though.
Vocaloid
  • Vocaloid
ok, it also says that the number of charter schools is 48 so we have: c = 2a - 4 48 = 2a - 4 do you know how to solve for a now?
anonymous
  • anonymous
uh- sorry you lost me, 2a would be 2*48 right? and that makes 94? but then take away 4 to get 90? but there is not an option for that
Vocaloid
  • Vocaloid
noope, not quite
Vocaloid
  • Vocaloid
we don't know what a is yet, that's what we want to find
Vocaloid
  • Vocaloid
our equation is 48 = 2a - 4 start by adding 4 to each side.
anonymous
  • anonymous
ooohh okay so adding five 52=2a-8?
Vocaloid
  • Vocaloid
nope, not quite.
Vocaloid
  • Vocaloid
2a-4+4 = ?
anonymous
  • anonymous
4+4= 8 2a-8?
Vocaloid
  • Vocaloid
nope -4+4 = ?
anonymous
  • anonymous
ooooh crud -4 sorry so 0 (im sorry im not the smartest ;-;)
Vocaloid
  • Vocaloid
don't apologize, you're doing fine :) so 2a-4+4 = 2a now we have 2a = 52 divide both sides by 2 to find a
anonymous
  • anonymous
26?
Vocaloid
  • Vocaloid
good! that's our answer ~
anonymous
  • anonymous
oh that makes a lot more sense then what i was doing thank you so much

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