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3 years ago

Given that events A and B are mutually exclusive, i.e., A?B = ? and P(A?B) =0, and that P(A)=0.7 and P(B)=0.2, find P(A or B).

Mathematics

1 answer:

TEA [102]3 years ago

7 0

Answer:

Step-by-step explanation:

i use d relationship between them

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Step-by-step explanation:

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3 years ago

Reduce the ratio to its lowest form. 72:8

dmitriy555 [2]

Answer:

9:1

Step-by-step explanation:

Try to reduce the ratio further with the greatest common factor (GCF).

The GCF of 72 and 8 is 8

Divide both terms by the GCF, 8:

72 ÷ 8 = 9

8 ÷ 8 = 1

The ratio 72 : 8 can be reduced to lowest terms by dividing both terms by the GCF = 8 :

72 : 8 = 9 : 1

Therefore:

72 : 8 = 9 : 1

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3 years ago

In a bag of oranges, the ratio of the good ones to the bad ones is 5:4. If the number of bad ones in the bag is 36, how many ora

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3 years ago

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3 years ago

If the mean of the data below is 3.8, find m<br>x 1 2 3 4 5 6<br>f 1 4 7 m 6 3

zloy xaker [14]

Answer:

m = 1.8

Step-by-step explanation:

Given data is as follows :

x 1 2 3 4 5 6

f 1 4 7 m 6 3

We need to find the value of m if the mean of the data is 3.8.

Mean = sum of observations/no. of observations

So,

$3.8=\dfrac{1+4+7+m+6+3}{6}\\\\22.8=21+m\\\\22.8-21=m\\\\m=1.8$

So, the value of m is equal to 1.8.

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3 years ago