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Soloha48 [4]
3 years ago
15

There are 24 children in a class, 16 brown-haired and 8 black-haired. Two students are randomly selected for a stage performance

. Find the probability of the following selection. P(2 black haired children)
Mathematics
1 answer:
Natali5045456 [20]3 years ago
6 0
The answer is 7/69.

There are 8 black-haired children among 24 children. The probability of <span>randomly selecting black haired children for the first time is:
P1 = 8/24 = 1/3

Now, there are 7 black-haired children left among 23 children. The probability of </span>randomly selecting black haired children for the second time is:
P2 = 7/23

Since we want both of these events to occur together, we will multiply their probabilities:
P = P1 * P2 = 1/3 * 7/23 = 7/69
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umka21 [38]

Step-by-step explanation:

there are 2 similar triangles : ABE and DCE

that means they have the same angles, and the scaling factor from one triangle to the other is the same for every side.

and that means that

DE/AE = EC/BE (= DC/AB)

we know that

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b.

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1 year ago
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