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3 years ago

What is P(A or B)...?

Mathematics

2 answers:

miss Akunina [59]3 years ago

5 0

<h2>Answer:</h2>

Option: B is the correct answer.

$B.\ \ \dfrac{7}{10}$

<h2>Step-by-step explanation:</h2>

We know that P(A or B) i.e. P(A∪B) is calculated by using the formula:

$P(A\bigcup B)=P(A)+P(B)-P(A\bigcap B)$

Now based on the pie chart we see that the total number of students who were surveyed are: 10

The number of students who love to play basketball are: 4

( The students are: Fran, Juan , Ian and Ella )

Number of student who love to play soccer are: 5

( The students are: Mickey, Mai, Marcus , Ian and Ella)

The number of student who love to play both basketball and soccer i.e. n(A∩B)= 2

( since those students are: Ian and Ella)

Hence, we have:

$P(A)=\dfrac{4}{10}\\\\\\P(B)=\dfrac{5}{10}\\\\\\P(A\bigcap B)=\dfrac{2}{10}$

Hence, we have:

$P(A\bigcup B)=\dfrac{4}{10}+\dfrac{5}{10}-\dfrac{2}{10}\\\\\\i.e.\\\\\\P(A\bigcup B)=\dfrac{4+5-2}{10}\\\\\\i.e.\\\\\\P(A\bigcup B)=\dfrac{7}{10}$

melamori03 [73]3 years ago

3 0

the answer is A.) 3/10

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Using the midpoint concept, it is found that the value of a is of a = 2.

<h3>What are the coordinates of the points?</h3>

Researching this problem on a search engine, the coordinates are given as follows:

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M(3,5).

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The midpoint between two points is the halfway point between them, and is found using the mean of the coordinates.

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2 years ago

If x varies inversely as the square of y and if x=3 when y=-1, what is the value of x when y =3

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Answer:

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Step-by-step explanation:

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