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drainy0uandthefish
07.12.2019 •
Mathematics
Abox contains
7
plain pencils and
3
pens. a second box contains
5
color pencils and
5
crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected?
Solved
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Ответ:
7 plain pencils, 3 pens...total of 10 writing utensils
box 2 :
5 color pencils, 5 crayons...total of 10 writing utensils
probability of choosing plain pencil from box 1 is : 7/10
probability of picking color pencil from box 2 is : 5/10 = 1/2
probability of both is : 7/10 * 1/2 = 7/20 or 35%
Ответ:
$90
Step-by-step explanation:
$125 + $60 - $7 + $40 - $3