Mathematics
8 Online
rootbeer003:
help
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rootbeer003:
hi
satellite73:
i thought we finished last night!
rootbeer003:
i still got words problems
satellite73:
you are on your own with word problems
rootbeer003:
They arnt hard...
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satellite73:
good, then you will have an easy time doing them...
lets see one
rootbeer003:
satellite73:
show your work?
satellite73:
i can't write long division here, it is a pain
do you really have to show your work?
rootbeer003:
yes.. u can just write it on something else and copy and paste it as an image
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rootbeer003:
wait i still got multiple choice.. lol
satellite73:
you get \[2x^3-2x-4\] with a remainder of 3 so 3x+1 is not a factor because there is a remainder
satellite73:
but i can't write or explain long division, it is just like long division with numbers
rootbeer003:
rootbeer003:
:(
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satellite73:
we did this one already
rootbeer003:
nope
satellite73:
row by column
two by three
rootbeer003:
what
satellite73:
\[\huge \color{red}{2\times 3}\]
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satellite73:
\[b_{42}\] fourth row, second column
rootbeer003:
a
satellite73:
let me know when you get \(-1\)
satellite73:
yes
rootbeer003:
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satellite73:
either C or D since 3 - 4 = -1 and 5 - 5 = 0
satellite73:
\[-8-(-10)=2\] so i guess C
rootbeer003:
satellite73:
multiply each entry by \(-4\)
which one do you get?
hint, your really only have to multiply the first entry by -4
rootbeer003:
b
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satellite73:
yes
rootbeer003:
satellite73:
what is \[5\times (-8)+3\times 4\]?
rootbeer003:
..?
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satellite73:
lol
satellite73:
just arithmetic dear, you can do it in your head
rootbeer003:
-28
rootbeer003:
a
satellite73:
yes
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rootbeer003:
satellite73:
\[4\times (-1)+2\times 0+3\times 5+8\]
rootbeer003:
19
rootbeer003:
d
satellite73:
yup
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rootbeer003:
satellite73:
no clue, lets google
satellite73:
i mean A is the only answer that makes sense, but lets google anyway
rootbeer003:
satellite73:
yeah was A
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rootbeer003:
satellite73:
my guess is A, but that is a guess
maybe more googling
rootbeer003:
and the one before is a?
satellite73:
don't you have a book or something to go along with this?
satellite73:
yeah A for both
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satellite73:
i have never seen this in my life
rootbeer003:
satellite73:
\[-30+8=-22\]
rootbeer003:
satellite73:
i think B
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rootbeer003:
satellite73:
answer is \[2x^3-2x-4+\frac{3}{3x+1}\]
satellite73:
i..e there is a remainder of 3
rootbeer003:
satellite73:
use wolfram
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rootbeer003:
satellite73:
i typed it in, it wasn't that hard
it factored
and gave me the graph too
rootbeer003:
k lemme try
rootbeer003:
satellite73:
yay
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satellite73:
you get the graph from wolf too
crosses the x axis at -3 and -2
satellite73:
crosses the y axis at 36
rootbeer003:
rootbeer003:
?
satellite73:
yeah but that doesn't look like the grid you were given to use
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rootbeer003:
rootbeer003:
can u draw it for me
satellite73:
something like this sorta
rootbeer003:
k ty
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rootbeer003:
satellite73:
the top graph
i tried, you ca probably do better
satellite73:
close enuf
rootbeer003:
yup
satellite73:
hope that is all
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rootbeer003:
rootbeer003:
lol
satellite73:
ok do you really have to show your work? i can write the steps if you like
satellite73:
it doesn't look like they left you with much room
rootbeer003:
no they left a whole page
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rootbeer003:
just write here what i should write
satellite73:
\[6^{3x}=104\\
3x=\frac{\log(104)}{\log(6)}\\
x=\frac{\log(104)}{3\log(6)}\] then a calculator
rootbeer003:
satellite73:
second one \[\log(2)+\log(4x-1)=3\\
\log(8x-2)=3\\
8x-2=10^3\\
8x-2=1000\\
8x=1002\\
x=1002/8=125.25\]
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satellite73:
don;t forget to give a decimal answer for the first one
rootbeer003:
satellite73:
looks good
rootbeer003:
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satellite73:
domain is \[x>3\]
satellite73:
range is all real numbers
satellite73:
vertical asymptote is \(x=3\)
rootbeer003:
rootbeer003:
which one
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satellite73:
either one
maybe the second would be better
satellite73:
satellite73:
actually your second one is probably best
rootbeer003:
satellite73:
no
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rootbeer003:
seriously do it for me cuz it looks like a crak head did it
satellite73:
make it look like the second one
satellite73:
you can do better then me
i don't even have a grid
rootbeer003:
rootbeer003:
shexy
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satellite73:
that is even worse
satellite73:
plus it is wrong
rootbeer003:
rootbeer003:
go for it tucker
satellite73:
i like totally suck at drawing with a mouse
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rootbeer003:
magnifico
rootbeer003:
satellite73:
yeah right
satellite73:
oh crap, it really should go through \((4,1)\) not \((4,0)\)
rootbeer003:
u gun do it again or?
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satellite73:
i was trying, it is like impossible
satellite73:
rootbeer003:
k next?
satellite73:
next what?
rootbeer003:
wanna do more?
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satellite73:
time for a new thread, i have 15minutes is all