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makvit [3.9K]
4 years ago
12

Simplify 2.7+3.6*4.5

Mathematics
1 answer:
Neporo4naja [7]4 years ago
6 0

Use PEMDAS    

2.7 +3.6*4.5

P= parenthesis

E= exponents

M= multiplication

A= addition                                        

S= subtraction

2.7 +3.6*4.5

Do multiplication first then adding  

3.6 *4.5=16.2

2.7+16.2=18.9

Answer: 18.9

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To know how many people surveyed trust none of the candidates we need to find:

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  • People that just trust candidate A and C: This is equal to people that trust candidate A and C less people that trust all three candidates. So it is equal to: 12 - 5 = 7
  • People that just trust candidate A and B: This is equal to people that trust candidate A and B less people that trust all three candidates. So it is equal to:  7 - 5 = 2
  • People that just trus candidate C: This is equal to the people that trust candidate C less people that just trust candidate B and C less people that just trust candidate A and C less people that trust all three candidates. So, it is equal to: 48 - 12 - 7 - 5 = 24
  • People that just trus candidate B: This is equal to the people that trust candidate B less people that just trust candidate B and C less people that just trust candidate A and B less people that trust all three candidates. So, it is equal to: 44 - 12 - 2 - 5 = 25
  • People that just trus candidate A: This is equal to the people that trust candidate A less people that just trust candidate A and C less people that just trust candidate A and B less people that trust all three candidates. So, it is equal to: 34 - 7 - 2 - 5 = 20

Therefore, we can calculate how many people surveyed trust at least one candidate by the sum of the previous quantities as:

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