anonymous
  • anonymous
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
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Please help :)
dan815
  • dan815
x+y=19 11(x)+13(y)=209 solve for x and y
anonymous
  • anonymous
is there a shorter version to do this that' should be a lot of work

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More answers

anonymous
  • anonymous
I solve for it and I always get like 19 or some decimal o-o
anonymous
  • anonymous
It just doesn't seem right!
anonymous
  • anonymous
i think i got a decimal also
anonymous
  • anonymous
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
anonymous
  • anonymous
@kc_kennylau can you assist me? I really need help with this v-v
kc_kennylau
  • kc_kennylau
(1)x11: 11x+11y = 209 ---(3) (2)-(3): 2y=0 --> y=0 ---(4) (4)>(1): x=19 ---(5)
anonymous
  • anonymous
x = 19?
anonymous
  • anonymous
So there are no non members? o_O
kc_kennylau
  • kc_kennylau
yep
anonymous
  • anonymous
OMG SO I WAS RIGHT THE WHOLE TIME
anonymous
  • anonymous
It just seemed so weird, why would they have it like that o-o
kc_kennylau
  • kc_kennylau
Never doubt yourself :p
anonymous
  • anonymous
I'm in an Algebra honors class, I get everything else except these type of problems v-v
anonymous
  • anonymous
So when something that weird shows up, I'm unsure if it's correct or not
anonymous
  • anonymous
But thank you so much @kc_kennylau !!! Also, what grade level are you at, just curious :)
kc_kennylau
  • kc_kennylau
I'm at a level equivalent to grade 9
kc_kennylau
  • kc_kennylau
I will be at a level equivalent to grade 10 in september
anonymous
  • anonymous
How o_O
anonymous
  • anonymous
Like how old are you?
kc_kennylau
  • kc_kennylau
15
anonymous
  • anonymous
Ok c;
anonymous
  • anonymous
how are you that smart
anonymous
  • anonymous
People work really hard to get to that level of intellect!
anonymous
  • anonymous
good job man
anonymous
  • anonymous
Only confusing thing know is me wondering why he did those: ---3 ---4 ---5 o_O
anonymous
  • anonymous
now*
anonymous
  • anonymous
Is that some sort of way to keep your equation organized or something
kc_kennylau
  • kc_kennylau
So that I can refer to the equations
anonymous
  • anonymous
yeah :P So all that stuff like (4) > 1: is a system you developed for when you answer questions on here? Wow...interesting
kc_kennylau
  • kc_kennylau
I usually write subst (4) into (1) in exams
kc_kennylau
  • kc_kennylau
But I'm too lazy
kc_kennylau
  • kc_kennylau
So that's a yes
anonymous
  • anonymous
Arent we all lazy in our own special little ways? haha :P
kc_kennylau
  • kc_kennylau
I suppose so ;)

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