anonymous
  • anonymous
Solve −np − 80 < 60 for n
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
\[-np - 80 < 60\]
anonymous
  • anonymous
What do you think we would do first?
anonymous
  • anonymous
add 80 to both sides

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anonymous
  • anonymous
Yep! Which we then get \[-np < 140\]
anonymous
  • anonymous
So now we want to get the 'n' by itself right?
anonymous
  • anonymous
divide by -n
anonymous
  • anonymous
Well that is one way but there is a faster/ easier way to doing this. Try thinking of the problem like this: \[-1np\] We are able to divide the -1 to remove the negative on the 'np' side.
anonymous
  • anonymous
so what is the answer
anonymous
  • anonymous
and can u help me with another one
anonymous
  • anonymous
\[np > 140\] Now because we divide by a negative, making us flip the sign. So the answer, if you were looking just for 'n', would be \[n > \frac{ 140 }{ p }\]
anonymous
  • anonymous
Sure
anonymous
  • anonymous
Solve 2a − 5d = 30 for d.
anonymous
  • anonymous
Hmmm... I remember this type of equation specifically, however, I do not remember the way in which you were to solve it. I will try my best though.
anonymous
  • anonymous
ok thank u
anonymous
  • anonymous
But I think the answer would either be d = -6 or d = -3
anonymous
  • anonymous
i think its -6

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