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Genrish500 [490]
3 years ago
6

A spinner has three equal sections labeled 1, 2, and 3. It is spun twice. Which expression can be used to determine P(2, then 1)

?
Mathematics
2 answers:
natita [175]3 years ago
6 0
1/3 . 1/3 i just took the test.
torisob [31]3 years ago
6 0

Answer:

\frac{1}{9}

Step-by-step explanation:

Given :A spinner has three equal sections labeled 1, 2, and 3. It is spun twice.

Solution :Which expression can be used to determine P(2, then 1)?

Solution :

Total no. of events = {1,2,3}=3

When it is spin for the first time .

Since we are given in the first spin she should get 2

No. of Favorable events ={2}=1

probability of getting 2 = \frac{\text{No. of favorable events}}{\text{No. of total events}}

= 1/3

In second spin she should get 1

No. of Favorable events ={1}=1

probability of getting 1= \frac{\text{No. of favorable events}}{\text{No. of total events}}

=\frac{1}{3}

Thus  P(2, then 1) = \frac{1}{3} *\frac{1}{3}

Hence the expression : P(2, then 1) = \frac{1}{3} *\frac{1}{3}

                                                         = \frac{1}{9}

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