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Licemer1 [7]
3 years ago
7

If A and B are two independent events with P(A)=2÷3 and P(B) =1÷5, find P(AUB).​

Mathematics
1 answer:
iren [92.7K]3 years ago
3 0

Answer:

for \: independent \: events :  \\ P(AUB) = P(A) + P(B) \\ P(AUB) =  \frac{2}{3}  +  \frac{1}{5}  \\  =  \frac{13}{15}

Step-by-step explanation:

P(AUB) is P(A) + P(B) because P(AnB) is zero.

P(AUB) = P(A) + P(B) - P(A{ \huge{n} }B) \\ P(AUB) = P(A) + P(B) + 0

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Maru [420]
3.241208 × 10 to the eighth power
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2 years ago
This table shows the number of different sized pipes that have been used at Highfield Builders in January.
mote1985 [20]

Answer:

No

Mean diameter = 44, which is in the 40 - 44 cm group

Step-by-step explanation:

Given the data:

Diameter (cm) - mid point(X) - frequency(F) - - FX

35-39 - - - - 37 - - - - 8 - - 296

40-44 - - - 42 - - - 10 - - - 420

45-49 - - - 47 - - - 13 - - - 611

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Mean of grouped data:

Sum of (F × X) / sum of F

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8 0
3 years ago
In the city, the dust and between the library and the police station is 3 miles less than twice the distance between the police
alina1380 [7]

Answer:

7 miles

Step-by-step explanation:

Let's call the distance between the library and police station x. Then, the distance between the police station and fire station would be 3 less than twice x. Twice means multiply by 2 so twice x is 2 * x = 2x and 3 less than means that you subtract 3 so 3 less than 2x is 2x - 3. Now, we know that x = 5 so all we have to do now is substitute x = 5 into 2x - 3, therefore, the answer is 2 * 5 - 3 = 7 miles.

4 0
3 years ago
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White raven [17]
8x=6x+20 Btw I figures it out x=10
4 0
3 years ago
Helpppppppp pleaseeee!!!!!!!!
SashulF [63]

Answer:

29.5 square inches

Step-by-step explanation:

Let's divide the shape into 3 parts to make it easy for us to find the area.

- a wide triangle

- a triangle

- a shorter rectangle

For the wider rectangle, the area is;

A1 = 8 × 2 = 16 in²

For the triangle, the area is;

A2 = ½(7 - 2) × 3

A2 = 7.5 in²

For the shorter rectangle, the area is;

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A3 = 6 in²

Total area = A1 + A2 + A3 = 16 + 7.5 + 6 = 29.5 square inches

8 0
3 years ago
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