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stealth61 [152]
3 years ago
15

In a survey of 300 house wires. It was discovered

Mathematics
1 answer:
ruslelena [56]3 years ago
8 0

Answer:

46 housewives read all three magazines.

Step-by-step explanation:

Given:

        n(A) = 150

        n(B) = 200

        n(C) = 156

        n(A∩B) = 48

        n(B∩C) = 60

        n(A∩C) = 52

         n(A∪B∪C) = 300

so we know the relation as:

  n(A∪B∪C) = n(A) + n(B) + n(C) - n(A∩B) - n(B∩C) - n(A∩C) + n(A∩B∩C)

∴ n(A∩B∩C) = n(A) + n(B) + n(C) - n(A∩B) - n(B∩C) - n(A∩C)  - n(A∪B∪C)

                    = 150 + 200+ 156 - 48 - 60 - 52 - 300

                   = 46

Hence the number of housewives that had read all three magazine is 46.

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the units of measurement for the composite function s(w(h)) is  \frac{Signs}{weeks} . Correct option A) .

<u>Step-by-step explanation:</u>

Here we have , Mary paints wooden signs and sells them at craft fairs. The function s(t) approximates how many signs Mary paints per hour. The function w(h) represents how many hours per week Mary spends painting the wooden signs. We need to find What are the units of measurement for the composite function s(w(h)) . Let's find out:

Basically we have two functions as ,

s(t) : how many signs Mary paints per hour

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w(h) : how many hours per week Mary spends painting the wooden signs

⇒ \frac{hours}{week}

In function composition, if we have two function f(x) and g(x) then

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Answer:

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Step-by-step explanation:

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Where based on the order of arrangement:

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9 inches= Width

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Step 1

Find the amount of wrapping paper needed

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Step 2

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Therefore, the amount of square inches of wrapping paper left over is 380 square inches.

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