Mathematics: 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). (a) 0.14 (b) 0.9 (c) 0.5 (d) 0.76 (e)1.04

Given that events A and B are mutually exclusive,

lorihab1970

19.01.2022

$P(A or B)= P(A \cup B) = 0.9$

Step-by-step explanation:

given , P(A)=0.7 P(B)=0.2

$P(A or B) = P(A \cup B) =0$

since it is mutually exclusive event , $P(A and B)= P(A \cap B) =P(A?B) = 0$

$P(A \cup B) = P(A) + P(B) - P(A\cap B)$

$P(A \cup B) = 0.7 + 0.2 - 0$

$P(A \cup B) = 0.9$

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ghari112345

29.07.2022

Step-by-step explanation:

The drawing of the lake has the scale of 1 centimeter to 80 meters.

Now, the actual width of the scale is of 1000 meters.

To find out the width of the lake on the drawing we need to convert the actual length as per the scale drawing.

Since we know that in the given scale drawing we have,

1 centimeter = 80 meters

Or we can say that

80 meters = 1 centimeter

1 meter = meter

Now, 1000 meters should be equivalent to

centimeters.