anonymous
  • anonymous
7x is more then or equal to 49 solve then graph plz help!!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
\[7x\ \geq \ 49 \iff x\ \geq 7\]
anonymous
  • anonymous
so the sign doesnt change?
anonymous
  • anonymous
No; the sign only changes when you divide by a negative number, in which case it reverses.

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anonymous
  • anonymous
oh ok how bout when i plot it on a line i keep the circal open right??
anonymous
  • anonymous
open circal and arrow going to the left ?
anonymous
  • anonymous
Hmm... I don't think so. I haven't done this for a while, but I think if it is more than OR EQUAL TO i.e. it includes the number, you use a solid circle. And the numbers are x greater than 7, so the line should go to 8, 9 10 etc, in that direction.
anonymous
  • anonymous
oh.. my mind is just going blank i cnt remember thats y im trying to double check
anonymous
  • anonymous
can u teach me how to solve this problem?.... -7x is more then 1/15 it says use multiplication princple.

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