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slava [35]
1 year ago
14

Seven years ago, Gaetano found a box of old baseball cards in the garage. Since then, he has addeda consistent number of cards t

o the collection each year. He had 52 cards in the collection after 3 years andnow has 108 cards.How many cards does Gaetano add each year?
Mathematics
1 answer:
AURORKA [14]1 year ago
7 0
Baseball cards

We know two things:

Gaetano had 52 cards on 3 years

Gaetano had 108 cards on 7 years

Then, from the fourth year to the seventh year he added

108 - 52 = 56 cards

In four years he added 56 cards. Then each year he added

56/4 = 14 cards

Since

14 * 3 = 42

On the first three years he added 42 cards to his collection.

Then he started with

52 - 42 = 10 cards

Answer: Gaetano started his collection with 10 cards and he adds 14 new cards to it each year

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b. P(B)

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From definition of complement we have this:

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d. P(AUB)

Using the total law of probability we got:

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For this case P(A \cap B) = P(c) =0.2, so if we replace we got:

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The intersection between the set A and B is the element c so then we have this:

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8 0
3 years ago
Help help help help help help help help help help help help help
Sever21 [200]

Answer:

its 24

kasi binabaliktad lang po ang year at value nya

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