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SarahLove<3

  • one year ago

A group of 19 students want to see the show at the planetarium. Tickets cost $11 for each student who is a member of the planetaruim's frequent visitor program and $13 for each student who is not a member. The total cost of the student's tickets is $209. How many students in the group are members of the frequent visitor program? How many are not members? Explain how you know. @Squirrels @prowrestler @dan815

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  1. SarahLove<3
    • one year ago
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    Please help :)

  2. dan815
    • one year ago
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    x+y=19 11(x)+13(y)=209 solve for x and y

  3. prowrestler
    • one year ago
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    is there a shorter version to do this that' should be a lot of work

  4. SarahLove<3
    • one year ago
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    I solve for it and I always get like 19 or some decimal o-o

  5. SarahLove<3
    • one year ago
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    It just doesn't seem right!

  6. prowrestler
    • one year ago
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    i think i got a decimal also

  7. SarahLove<3
    • one year ago
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    But putting the decimal back in for x and such it doesn't add up correctly to 209 v-v I was told that @dan815 was really smart, I was hoping he could help me

  8. SarahLove<3
    • one year ago
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    @kc_kennylau can you assist me? I really need help with this v-v

  9. kc_kennylau
    • one year ago
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    (1)x11: 11x+11y = 209 ---(3) (2)-(3): 2y=0 --> y=0 ---(4) (4)>(1): x=19 ---(5)

  10. SarahLove<3
    • one year ago
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    x = 19?

  11. SarahLove<3
    • one year ago
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    So there are no non members? o_O

  12. kc_kennylau
    • one year ago
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    yep

  13. SarahLove<3
    • one year ago
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    OMG SO I WAS RIGHT THE WHOLE TIME

  14. SarahLove<3
    • one year ago
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    It just seemed so weird, why would they have it like that o-o

  15. kc_kennylau
    • one year ago
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    Never doubt yourself :p

  16. SarahLove<3
    • one year ago
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    I'm in an Algebra honors class, I get everything else except these type of problems v-v

  17. SarahLove<3
    • one year ago
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    So when something that weird shows up, I'm unsure if it's correct or not

  18. SarahLove<3
    • one year ago
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    But thank you so much @kc_kennylau !!! Also, what grade level are you at, just curious :)

  19. kc_kennylau
    • one year ago
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    I'm at a level equivalent to grade 9

  20. kc_kennylau
    • one year ago
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    I will be at a level equivalent to grade 10 in september

  21. SarahLove<3
    • one year ago
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    How o_O

  22. SarahLove<3
    • one year ago
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    Like how old are you?

  23. kc_kennylau
    • one year ago
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    15

  24. SarahLove<3
    • one year ago
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    Ok c;

  25. prowrestler
    • one year ago
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    how are you that smart

  26. SarahLove<3
    • one year ago
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    People work really hard to get to that level of intellect!

  27. prowrestler
    • one year ago
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    good job man

  28. SarahLove<3
    • one year ago
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    Only confusing thing know is me wondering why he did those: ---3 ---4 ---5 o_O

  29. SarahLove<3
    • one year ago
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    now*

  30. SarahLove<3
    • one year ago
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    Is that some sort of way to keep your equation organized or something

  31. kc_kennylau
    • one year ago
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    So that I can refer to the equations

  32. SarahLove<3
    • one year ago
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    yeah :P So all that stuff like (4) > 1: is a system you developed for when you answer questions on here? Wow...interesting

  33. kc_kennylau
    • one year ago
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    I usually write subst (4) into (1) in exams

  34. kc_kennylau
    • one year ago
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    But I'm too lazy

  35. kc_kennylau
    • one year ago
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    So that's a yes

  36. SarahLove<3
    • one year ago
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    Arent we all lazy in our own special little ways? haha :P

  37. kc_kennylau
    • one year ago
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    I suppose so ;)

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