Answer:
Let's see what to do buddy...
Explanation:
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STEP (1)
We have to know how many pets does the pet store have.
Look : 10 + 9 + 8 = 27
So the pet store completely have 27 pets.
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STEP (2)
Mario randomly selects a pet :
Is the Probability of selecting a cat.
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Is the Probability of selecting a dog.
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STEP (3)
(( or )) in mathematics means plus (( + )) .
So the Probability of selecting a cat or a dog means :
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STEP (4)
There's no STEP 4.
And we're done.
Thanks for watching buddy good luck.
♥️♥️♥️♥️♥️