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anonymous

  • one year ago

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...???

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  1. Vocaloid
    • one year ago
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    let's define our variables let a = number of alternative schools let c = number of charter schools with me so far?

  2. anonymous
    • one year ago
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    yes i am

  3. Vocaloid
    • one year ago
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    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?

  4. anonymous
    • one year ago
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    yep. thats what ive already done though.

  5. Vocaloid
    • one year ago
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    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?

  6. anonymous
    • one year ago
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    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

  7. Vocaloid
    • one year ago
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    noope, not quite

  8. Vocaloid
    • one year ago
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    we don't know what a is yet, that's what we want to find

  9. Vocaloid
    • one year ago
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    our equation is 48 = 2a - 4 start by adding 4 to each side.

  10. anonymous
    • one year ago
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    ooohh okay so adding five 52=2a-8?

  11. Vocaloid
    • one year ago
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    nope, not quite.

  12. Vocaloid
    • one year ago
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    2a-4+4 = ?

  13. anonymous
    • one year ago
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    4+4= 8 2a-8?

  14. Vocaloid
    • one year ago
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    nope -4+4 = ?

  15. anonymous
    • one year ago
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    ooooh crud -4 sorry so 0 (im sorry im not the smartest ;-;)

  16. Vocaloid
    • one year ago
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    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

  17. anonymous
    • one year ago
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    26?

  18. Vocaloid
    • one year ago
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    good! that's our answer ~

  19. anonymous
    • one year ago
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    oh that makes a lot more sense then what i was doing thank you so much

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