anonymous
  • anonymous
A student proposed the following method of sketching the solution to a system of two inequalities. “First, I shade the region of points that satisfies the first inequality. Then, I shade the region of points that satisfy the second inequality. The solution consists of all points that have been shaded.” Do you agree? Explain. Support your answer using the system: 5x-3y>1 and 3x+4y<=18
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
If it's a system of inequalities, that means that both inequalities must be satisfied. And the problem has you shading the areas that satisfy one or the other, but not necessarily both. So no, that's not a valid method. The actual region that satisfied the inequality is the bit that gets shaded twice.
anonymous
  • anonymous
Ok that's what I thought cause I had that but I was marked wrong...weird
anonymous
  • anonymous
Thanks for helping though.

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anonymous
  • anonymous
Sure thing.
amistre64
  • amistre64
the word 'and' is of importance there right? ir means what they have in common
amistre64
  • amistre64
the answer is false; because it includes any solutions from either set; and that would be 'OR'
anonymous
  • anonymous
right makes sense I was just checking cause I think the online answer key that checks my quizzes is wrong.... I was like this is an easy question and I still got it wrong! lol I'll talk to my teach about it.
amistre64
  • amistre64
which of these factors is a physical obstcale to communication; noise, race, and 2 others that were pointless. the correct answer out of the book was 'noise'; but the quiz marked it wrong and said 'race' lol
anonymous
  • anonymous
ha ha ya don't you just love when that happens! ha ha NOT.. It's more like are you serious right now lol

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