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Annette [7]
3 years ago
9

(5x - 18) + (4x + 7) = 180 what is the value of x?

Mathematics
1 answer:
CaHeK987 [17]3 years ago
7 0
(5x-18)+(4x+7)=180
5x+4x=180+18-7
9x=191
x=191/9

Answer: x=191/9
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3 years ago
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olga2289 [7]

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Step-by-step explanation:

Since we have given that

Number of students = 500

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Number of students eat between meals = 119

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b) eats between meals and drink alcohol but does not smoke.

P((M\cap A)-S)=P(M\cap A)-P(M\cap S\cap A)\\\\P((M\cap A)-S)=\dfrac{59}{500}-\dfrac{30}{500}\\\\P((M\cap A)-S)=\dfrac{59-30}{500}\\\\P((M\cap A)-S)=\dfrac{29}{500}\\\\P((M\cap A)-S)=0.058

c) neither smokes nor eats between meals.

P(S'\cap M')=1-P(S\cup M)\\\\P(S'\cap M')=1-\dfrac{72}{500}\\\\P(S'\cap M')=\dfrac{500-72}{500}\\\\P(S'\cap M')=\dfrac{428}{500}=0.856

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