Mathematics
20 Online
OpenStudy (anonymous):
Please Help Me
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OpenStudy (anonymous):
OpenStudy (anonymous):
still need help?
OpenStudy (anonymous):
yas
OpenStudy (anonymous):
ok so you have \[3x+6y=3\]
+ \[5x-y=27\]
right
OpenStudy (anonymous):
yes
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OpenStudy (anonymous):
so multiply all of 5x-y=27 by 6
OpenStudy (anonymous):
what do you get?
OpenStudy (anonymous):
24
OpenStudy (anonymous):
you should of got 30x-6y=162
OpenStudy (anonymous):
but thats fine
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OpenStudy (anonymous):
oh i see what you did okay
OpenStudy (anonymous):
so now you have 3x+6y=3
+ 30x-6y=162
right
OpenStudy (anonymous):
yas
OpenStudy (anonymous):
ok so now the positive 6y and the negative 6y cancel now right?
OpenStudy (anonymous):
sure
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OpenStudy (anonymous):
ok so you are left with 3x=3
+30x=162
so 30x+3x is 33x and 3+162 is 165 right so you have
33x=165
does this make since so far?
OpenStudy (anonymous):
yas
OpenStudy (anonymous):
ok so then you would divide 33 from both sides and end up with what? x=______
OpenStudy (anonymous):
x=5?
OpenStudy (anonymous):
right so plug in 5 for x in 3x+6y=3 then solve for y
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OpenStudy (anonymous):
what do you get?
OpenStudy (anonymous):
-2
OpenStudy (anonymous):
yes so x=5
and y=-2
make since?
OpenStudy (anonymous):
yes, thank you. can you help me with my other problems?
OpenStudy (anonymous):
yea no prob but i might have to go soon so ill help until then
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OpenStudy (anonymous):
i have to go at one...so until then?
OpenStudy (anonymous):
12:15 sorry ill stil help until then ill fan you so if you ever need help just tag me or message me ok?
OpenStudy (anonymous):
okay, thxs.
OpenStudy (anonymous):
these are my last two...you dont have to explain these if you dont want to or have time to
OpenStudy (anonymous):
the second one is c
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OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
no prob hey i got to go im sorry
OpenStudy (anonymous):
will u still need help tomorrow?
OpenStudy (anonymous):
yes...i'll just guess on the last one...thnks for the help
OpenStudy (anonymous):
your welcome ;) bye
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OpenStudy (anonymous):
byii