3 years ago

B ∩ U A = U(B ∩ A).

Mathematics

1 answer:

NARA [144]3 years ago

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There are 5280 feet in a mile. What fraction is represented by 240 feet?

Sauron [17]

The fraction would be the portion over the total:

240 / 5280

Divide both top and bottom by 240 and the fraction simplifies to 1/22

The answer is 1/22

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Scrat [10]

Answer:

Polygon, quadrilateral, convex, and equilateral.

Step-by-step explanation:

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The Charleston family has less than 500 Dalmatians. There are six times as many Dalmatians with black spots on their right ears

ANEK [815]

Let x be the number of Dalmatians without black spots.
So, x+6x is close to 500, which means x=71.
71*7=497, which is the total number of Dalmatians.
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3 years ago

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Ksenya-84 [330]

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3 years ago

If records indicate that 15 houses out of 1000 are expected to be damaged by fire in any year, what is the probability that a wo

nordsb [41]

Answer: 0.01708

Step-by-step explanation:

Given : If records indicate that 15 houses out of 1000 are expected to be damaged by fire in any year.

i.e. the probability that house damaged buy fire in a year : $p=\dfrac{15}{1000}=0.015$

The formula for binomial distribution is given by :-

$^{n}C_xp^x(1-p)^{n-x}$

Now, the probability that a woman who owns 14 houses will have fire damage in 2 of them in a year (put n=14 and x=2), we get

$^{14}C_2(0.015)^2(1-0.015)^{14-2}\\\\=\dfrac{14!}{2!(14-2)!}(0.015)^2(0.985)^{12}\\\\=0.0170788520518\approx0.01708$

Hence, the required probability = 0.01708

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3 years ago