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3 years ago

Events A and B are mutually exclusive. Also P(A) =0.2 and P(B) = 0.37. What is P(A or B)

Mathematics

1 answer:

Alchen [17]3 years ago

7 0

Answer:

0.074

Step-by-step explanation:

cause in probability when two events are exclusive we use multiplication rule

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Algebra please help me!!!!

irinina [24]

C = 8x + 5y
-5y + c = 8x
-5y = -c + 8x
y = c - 8x / 5

2nd option

6 0

3 years ago

Suppose A= {5,6,8,10,12} and B= {8,9,12,13,14} What is AunionB?

earnstyle [38]

Answer:

A ∪ B = {5 , 6 , 8 , 9 , 10 , 12 , 13 , 14}

Step-by-step explanation:

The symbol of union is ∪

The symbol of intersection is ∩

In the sets A and B

A ∪ B means all elements in sets A and B without repeating

A ∩ B means the common elements in sets A and B

n(A ∪ B) = n(A) + n(B) - n(A ∩B), where n is the number of elements in the set

Now let us solve the question

∵ Set A = {5 , 6 , 8 , 10 , 12}

∴ n(A) = 5

∵ Set B = {8 , 9 , 12 , 13 , 14}

∴ n(B) = 5

The elements 8 and 12 are in the two sets

∵ There are two common elements in the two sets 8 and 12

∴ n(A ∩ B) = 2

Use the 3rd rule above to find how many elements in A ∪ B

∵ n(A ∪ B) = 5 + 5 - 2

∴ n(A ∪ B) = 8

∴ The set of A ∪ B has 8 elements

∵ A ∪ B means all elements in A and B without repeating

∴ A ∪ B = {5 , 6 , 8 , 9 , 10 , 12 , 13 , 14}

4 0

3 years ago

Degree is defined as number of incidents to vertex. Select one: True False

alexandr402 [8]

Answer:

The answer is : True

Step-by-step explanation:

In graph theory, the degree of a vertex of a graph is the number of edges that are incident on the vertex, and in a multigraph, loops are counted twice.

4 0

3 years ago

C = 7a^4+ + 5a²b2 – 3b^4 D=5a^4 + 7a²b^2 + 3b^4 C - D =

Gekata [30.6K]

Answer:

2a^4 +12a

$2 {a}^{4} + 12 { a}^{2} \\ \times \times$

5 0

3 years ago

Read 2 more answers

A farmer from Whidbey Island: A man claims his whalebone can detect water. You design an experiment using a set of 4 cans, 3 emp

tatyana61 [14]

Answer:

The value is $E(x) = 1.25$

Step-by-step explanation:

From the question we are told that

The number of cans is n = 4

The number of can that are empty is N = 3

The number of can filled with water is k = 1

The number number of sets of cans is w = 5

Generally probability of detecting the correct can is mathematically represented as

$p = \frac{k}{n}$

=> $p = \frac{1}{4}$

=> $p = 0.25$

Generally probability of not detecting the correct can is mathematically represented as

$q = 1- p$

$q = 1- 0.25$

$q = 0.75$

Generally the number of cans expected of the farmer to correctly identify by chance is mathematically represented as

$E(x) = w * p$

=> $E(x) = 5 * 0.75$

=> $E(x) = 1.25$

5 0

3 years ago