Fan and Medal

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r u there
yeah
can u help me with my homework its algebra 1
Okay I can try, am I supposed to do all of that?
ill do it with u though
what is the paper/book called?
springboard
the green/rainbow one?
ya why
I cant read all of the picture
which one
13
13 right?
yeah mostly just the word problems
the 2 cutoff words are equation and equal
this is hard
i know
srry
i tried to understand but its complicated
ok
anybody there who can help me
yay @jim_thompson5910 ur here
which one are you stuck on?
i need help on 13-15, 17, 21, 25, 26, 27:b, 28, 34, 35, 36, 37, 38, 39:a,b, 40. i know its a lot pls forgive me
nvr mind i dont need help on 28
well there are a lot of similar problems, so why not do it where we help with a few and you practice on the rest?
ok
lets start with 13-15
okay so lets saw for a member for 1 year he just pays 35 a NON-member will pay lets say 5 dollars every time he uses the gym let n the number of uses lets see at what number of uses the member = non member 35=5*n when n=7, 5*7=35 so a non member if he uses the gym 7 times he will pay the same as a guy who payed for a whole year, if he uses the gym more than 7 times he will have to pay more than the guy with a membership, if he uses the gym less than 7 times he will have to pay less Now for your question instead of 5 dollars every time he uses, they have a different number or some random number k
I'm stumped. It seems like there's information missing in #13. How much does it cost per visit? It doesn't say.
is the problem cut off or something?
no
@dan815 where did you get those values from?
it says that the cost of being a member of the frequent visitor program = the cost of not being a member
just made it up for an example, instead of 5 i think ninja has to use a variable there
the variable is n
which is the number of visits per year
he left
well I still think there's missing info, but anyway, let's say the cost per day is k dollars. The k is some unknown number if you visit n times for that year, then it costs k*n dollars
set that equal to the 5 dollar yearly fee to get k*n = 5
make sense?
so thats the equation for 13, right?
do you see how I formed it?
yes
what about 14 and 15
I think they want you to solve for n
in #14
oh let me try
is it 5?
get n all by itself in the equation `k*n = 5`
oh let me try it that way
how do u divide 5 by k
nvr mind how do u get n by itself
you just leave it like that, so you'd have \[\Large n = \frac{5}{k}\]
that's what you'd have after dividing both sides by k
and then
if you knew the value of k (the number it represents), then you could replace k with that number and divide
but we don't know what k is so we leave it like 5/k
ok so thats #14
is it?
yeah
ok
#15
how do u do number 15
nvrmind i know that
#17??
what would be the answer to #15
actually i dunno could u help me
u there
give it a try and tell me what you think
is it 5 divided by the money.......i dunno!
what does n represent
the # of visits??
yes, so 5/k represents the number of visits (because it's equal to n)
if k = 1, then 5/k = 5/1 = 5 basically saying if the price per visit is $1, then you'd have to make 5 visits for the two costs to be equal
ok thank u very much
no problem
what about #17
8x + 5 = 3x + 15 solve for x
ok
bye
wait wat
.
no wait
r u there
can you get all the x terms to one side? and everything else to the other side?
let me try
is it 8x+3x = 5+15
no
to move that 3x over, you have to subtract 3x from both sides
:O
you need the 3x on the right side to turn into 0x or 0 3x-3x = 0x = 0
|dw:1441242757695:dw|
|dw:1441242784001:dw|
|dw:1441242807116:dw|
oh ok then it will be 5x+5=15
r u there @jim_thompson5910
|dw:1441242986486:dw|
i was right
Now subtract 5 from both sides |dw:1441243014153:dw|
|dw:1441243025086:dw|
it will be 5x=10, right?
my final answer will be x=2
yes
yay!!
now can u help me with #26?
what time is it for u?
what do you have so far for #26 ?
nothing cause i dont get it
u there?
i need help!
@me10000 my buddy
have you heard of the distributive property?
yes
I am not sure if I know this sorry....
oh now i get it the 2nd step is distributive property, right?
yeah because `2(x-1)` turns into `2*x+2*(-1)` which becomes `2x-2`
same with the `-3(x+2)`
ok what about the other steps
how are they simplifying line 2 to get line 3?
2x-3x - 2- -6 =-1x - 8
the other side stays the same
how is that left side simplified? what happened?
You got this slice...
i combined like terms
thanks for the encouragement @me10000 i would have been a goner if it wasnt for @jim_thompson5910
@jim_thompson5910 r u there
`i combined like terms` good so the reasoning is simply "combine like terms"
there's no fancy math term needed
Yep pm me if I can be of any assistance... With anything there than this...
lol ok
next step looks more complicated
what's the change from line 3 to line 4?
let me see
they are trying to get the variable alone
or are they??
yeah that's the ultimate goal
focus just on line 3 and line 4 what changes?
they are adding 4x to both sides
yep
they are using the additive property of equality
additive property of equality if a=b, then a+c = b+c
oh now i get it
line 5 looks like the answer of line 4
what changed here
i dunno
r u there
did u leave?? oh no!
what changed from -1x+4x-8 = 8-4x+4x to 3x-8 = 8 look closely
nvrmind ur here i got scared
-1x+4x became 3x
so you combined like terms
same for -4x+4x = 0x = 0
oh ok
Let me guess: the next line is additive property of equality, right?
why would it be that rule?
Because they are adding 8 to both sides. Am I right?
good
Yay!!
I'll be right back.
the next line is combine like terms
ok
tell me when ur back
r u there yet
hello??
`the next line is combine like terms` correct
the next line is division property of equality, right?
correct
the last step is combine like terms, right?
no, it's to convert the improper fraction to a mixed number
oh ok thanks
np
whats #27
u there
what did you write in pencil? I can see something faintly written
thats for part a of the question. its this: 4w+12(w-1)=36
what does w represent
im sorry but i forgot it was for
how did you form the equation?
i copied from my teacher
and you don't remember how the teacher got it?
the teacher was ina hurry
give a guess what w represents
the total distance?
w = walking w is the time spent walking
in hours
so w-1 is the time spent biking (1 hour less)
oh ok
if you walk for w hours, and you walk at a speed of 4 mph, then how far do you walk?
4*w
u there
yep, how far do you go when you bike?
12*w
is it?
not just w though
then what?
is it 12*w-1
the 12(w-1) like you wrote
12 times (w-1)
yes i was right the second time
so the two distances add to get `4w+12(w-1)`
that's how he got that left side
now we find the value of w, right?
yeah for part b
im doing it
i found it: x=3
am i right?
w = 3 is correct
so he walked for 3 hrs and biked for 2 hrs (since w-1 = 3-1 = 2)
how did he walk 3 hrs though?
you just solved to get w = 3
ya so?
w represented the number of hours walked
oh ok thanks now i get it.
thnks for everything bro ur the best.

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