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prisoha [69]
3 years ago
10

If A and B are mutually exclusive events, then P(A or B) = P(A) + P(B).

Mathematics
1 answer:
Korolek [52]3 years ago
8 0

Answer:

P(A or B) = 25%

Step-by-step explanation:

P(A and B) = 30%

P(A) = 40%

P(B) = 15%

Apply given formula:

P(A or B) = P(A) + P(B) - P(AB)

= 40%+15+-30%

= 25%

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This is how you solve this problem:
.10d + .05n = 5.25

(plug in the number of dimes we have)

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(multiply number of dimes x value of the dime)

2.10 + .05n = 5.25

(subtract 2.10 from both sides)

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n = 63 nickels

Hope this helps!

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I'm not entirely sure I did this right! But at least try!!!

Step-by-step explanation:

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3 years ago
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