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sweet [91]
3 years ago
5

Discuss the conditions under which P(A or B)= P(A) + P(B) is true

Mathematics
1 answer:
Andrews [41]3 years ago
4 0
That condition is true if P(A) and P(B) are independent of one another. For example, if I was pulling marbles out of a bag, if I am replacing the marbles back after I pull one out, then P(A or B) = P(a)+P(B).
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Find the value of a/b when a = 2/3 and b= 7/9
Usimov [2.4K]

Answer:

6/7

Step-by-step explanation:

2/3X9/7

simplify 9 by 3

which equals:

2/1X3/7

=6/7

7 0
3 years ago
Which of the following is the surface area of the right cylinder below?
yarga [219]

Answer:

if it is TSA- 396 or 395.64

if it is CSA- 88 or 87.92

Step-by-step explanation:

r=7

h=2

TSA= 2 pi r(r+h)

=2*22/7*7*9= 396

<em>CSA</em>= 2 pi r h

2*22/7*7*2=88

when you use pi as 3.14 instead of 22/7 you get the answer with the decimal symbol.. in such case the TSA would be 395.64 and CSA would be 87.92

6 0
3 years ago
Read 2 more answers
Find the cost of 20cm at 75 per m
zheka24 [161]

Answer:

20cm = 0.2 m

The cost

= 0.2 x 75

= $15

7 0
2 years ago
Read 2 more answers
I am confused on this is it 1/8
Oxana [17]
Yes it is 1/8.You don’t multiply the top part of the fraction,just the bottom.
6 0
3 years ago
How do you solve this
UNO [17]
7 divided by 1 is 7 so you would do long division
5 0
3 years ago
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