fortinialexandra19
fortinialexandra19 fortinialexandra19
  • 14-03-2016
  • Mathematics
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Cant figure it out. Help please!

Cant figure it out Help please class=
Cant figure it out Help please class=

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zexius
zexius zexius
  • 14-03-2016
For question 3, you needn't worry about the number of total students asked. The question is really just asking you what's 45% as a fraction, which is 9/20. This is because 45% = 45/100, divided by 5 = 9/20. For question 6, just substitute in the values. So you do 4(7 × 4 - 3 × -7), which gives you 4(28 - -21). Two minuses make a plus, so it's just asking you to do 4 × 49 (because 28 + 21 = 49). The answer is 196.
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