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77julia77 [94]
4 years ago
13

An airline offers daily flights between Chicago and Denver. The total monthly cost C (in millions of dollars) of these flights c

an be modeled by
C= square root of 0.2x+1
Where X is the number of passengers (in thousands). The total cost of the flights for June is $1.5 million. How many passengers flew in June? (Round your answer to the nearest person.)

Mathematics
1 answer:
Ira Lisetskai [31]4 years ago
8 0

Answer:

   6250

Step-by-step explanation:

Fill in the given number and solve for x. The answer is 1000x, rounded.

  C=\sqrt{0.2x+1}\\\\1.5=\sqrt{0.2x+1} \quad\text{use given value for C}\\\\2.25=0.2x+1 \quad\text{square both sides}\\\\1.25=0.2x \quad\text{subtract 1}\\\\6.25=x \quad\text{multiply by 5}

x is in thousands, so 6.25×1000 = 6,250 passengers flew in June.

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What are the related frequencies to the nearest hundredth of the columns of the two way table?
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Answer: The relative frequency of column A in group 1=0.75

The relative frequency of column B in group 1=0.25

The relative frequency of column A in group 2=0.56

The relative frequency of column B in group 2=0.44

Step-by-step explanation:

The relative frequency is the ration of each frequency by the total value in particular group.

For group 1 : Total =102+34=136

The relative frequency of column A in group 1=\frac{102}{136}=0.75

The relative frequency of column B in group 1=\frac{34}{136}=0.25

For group 2 : Total =18+14=32

The relative frequency of column A in group 2=\frac{18}{32}=0.5625\approx0.56

The relative frequency of column B in group 2=\frac{18}{32}=0.4375\approx0.44

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