Mathematics
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OpenStudy (anonymous):
Math help please :)
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OpenStudy (anonymous):
OpenStudy (anonymous):
@nincompoop
OpenStudy (anonymous):
@BloomLocke367
OpenStudy (bloomlocke367):
okay, so you have \(-pn-6\le3(c-5)\) you want to distribute the 3 to the c and -5
OpenStudy (anonymous):
how do i do that?
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OpenStudy (bloomlocke367):
okay, well you have to multiply each of the terms inside the parentheses by 3. so you'd do \(3\times c\) and \(3\times -5\)
OpenStudy (anonymous):
-15
OpenStudy (bloomlocke367):
yes, and you also have 3c
OpenStudy (anonymous):
so 3c and -15
OpenStudy (anonymous):
-np - 6 ≤ 3c -15
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OpenStudy (bloomlocke367):
yep, so now you have \(-np-6\le 3c-15\). now you want to add 6 to both sides
OpenStudy (anonymous):
9c and -9?
OpenStudy (bloomlocke367):
no, when you add, you can only add it to like terms... so it's \(-np\le 3c-9\) does that make sense?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
so then its d?
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OpenStudy (bloomlocke367):
no, it's not d.. close, though.
OpenStudy (anonymous):
B then?
OpenStudy (bloomlocke367):
b*
OpenStudy (anonymous):
wait
OpenStudy (bloomlocke367):
my bad
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OpenStudy (anonymous):
it is d?
OpenStudy (bloomlocke367):
I meant to say b
OpenStudy (anonymous):
omg what
OpenStudy (anonymous):
is it d or b
i think its d
OpenStudy (bloomlocke367):
you're right that it's B.. do you know why?
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OpenStudy (bloomlocke367):
it is NOT D.. I'm so sorry for the confusion
OpenStudy (anonymous):
no. i could swear that its d cuz the sign is the same
OpenStudy (bloomlocke367):
yes, but you have to divide both sides by -1 to get that.. and when you divide by a negative number, the sign flips
OpenStudy (anonymous):
oh
okay
OpenStudy (bloomlocke367):
yes, do you understand? I'm so sorry that I messed up earlier XD
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OpenStudy (anonymous):
thats okay, and yes i understand