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Rus_ich [418]
3 years ago
7

If A and B are mutually exclusive events, with P(A) = 0.19 and P(B) = 0.27, what is P(A or B)?

Mathematics
2 answers:
tangare [24]3 years ago
8 0

Answer: 0.46

Step-by-step explanation:

We know that when two events X and Y are mutually exclusive, then

\text{P(X or Y)}=P(X)+P(Y),\ \ \ \text{Since }P(X\cap Y)=0

Given:  A and B are mutually exclusive events, with

P(A) = 0.19 and P(B) = 0.2

Now, \text{P(A or B)=P(A)+P(B)}\\\\\Rightarrow\text{P( A or B)}=0.19+0.27\\\\\Rightarrow\text{P( A or B)}=0.46

Ganezh [65]3 years ago
7 0
I believe it's 0.46
hope it helped
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A rectangular television screen has an area of w^2 + 2w square inches if the width of the television screen is w inches, what is
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The area of a rectangle is:

A =  length × width

A rectangular television screen has an area:

A = w² + 2w inches²

width = w

length = A / width  = (w² + 2w) / w = w(w + 2) / w = <u>w + 2</u>

Ansver:

<h2><u>length = w + 2</u></h2><h2><u></u></h2><h2><u></u></h2>
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3 years ago
Please help ASAP 15 POINTS BRAINIEST ANSWER!!
maxonik [38]
1) around 1300

2) around 30

3) a. about 500
    b. about 2600

Hope this helps you!
7 0
3 years ago
cho tứ giác ABCD. Gọi M,N,P,Q là trung điểm của các cạnh AB, CD, AD, BC. Chứng minh rằng vecto MP = vecto QN, vecto MQ = vecto P
Dmitriy789 [7]

Answer:

Step-by-step explanation:

Xét tam giác DAB có: P là trung điểm AD, M là trung điểm AB

=> MP là đường trung bình của tam giác DAB => MP//BD và MP=\frac{1}{2}BD  (1)

Xét tam giác DBC có: N là trung điểm DC, Q là trung điểm BC

=> QN là đường trung bình của tam giác DBC => QN//BD và QN=\frac{1}{2}BD  (2)

Từ (1) và (2) => vecto MP song song cùng chiều với vecto QN

và độ dài MP = độ dài QN = \frac{1}{2}BD

=> vecto MP = vecto QN

Tương tự xét các tam giác DAC và tam giác ABC => vecto MQ = vecto PN

4 0
3 years ago
Which set of side lengths form a right triangle?
kotykmax [81]

Answer:

the answer is option A

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Step-by-step explanation:

6 0
2 years ago
A coin is to be tossed until a head appears twice in a row. What is the sample space for this experiment? If the coin is fair, w
blsea [12.9K]

Answer:

The sample space would be infinite

{HH, TTTHH, TTTTHH, TTTTTTTHH.......................}

1/8

Step-by-step explanation:

The sample space would be infinite

{HH, TTTHH, TTTTHH, TTTTTTTHH.......................}.

This is because the number of times the coin would be flipped is not specified. So, you can keep flipping the coin forever.

If the coin is tossed four times then the sample space would be

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HTTT TTTT TTHT THTT}

HTHH and TTHH are the only two cases where two consecutive tosses will result in two heads

Probability that the coin will be tossed four times is 2/16 = 1/8

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