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Vikki [24]
3 years ago
8

I need help on these 3 !!

Mathematics
2 answers:
vazorg [7]3 years ago
8 0

Answer:

6. 0

9. -36

12. -125

Step-by-step explanation:

hope it helped :)

Marysya12 [62]3 years ago
5 0
#6 is 0
# 9 is 36
#12 is -125
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Can someone smart please help me?
ollegr [7]
Hello! 

For a:

How I would do this, is I would first say if all 46 animals (heads) were chickens, how many legs would there be? Each chicken has 2 legs, so 46 * 2 = 92. The total amount of legs is 96 as stated in the question, so if all of the animals were chickens, the farmer would be 4 legs short.

Now to add rabbits into the equation. Rabbits have 4 legs, and chickens have 2. You want to find the difference between the two, because as you add rabbits to the animals the farmer has, then you have to take away chickens at the same time. 4-2 = 2, so for each rabbit you replace, you add 2 legs. 

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b)

You can follow the same steps: I'm assuming all are child tickets for now:

3.05 * 100 = $305

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498.6 - 305 = 193.6

Next, you find the difference in the ticket costs.

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193.6 / 2.2 = 88

Since 100 tickets were sold, and 88 adult tickets were sold, that means 12 child tickets were sold.
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3 years ago
2(-3n-5)-5(4n-8) Simplify
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AB =  \sqrt{ ({3 - ( - 2)})^{2} +  ({4 - 0})^{2}  }  \\

AB =  \sqrt{ ({3 + 2})^{2} +  {4}^{2}  }

AB =  \sqrt{ {5}^{2} +  {4}^{2}  }

AB = \sqrt{25 + 16}

AB = \sqrt{41}

AB = 6.403

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