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Alexandra [31]
3 years ago
13

Last answer choice is 4,2 Help

Mathematics
1 answer:
Troyanec [42]3 years ago
7 0

Use the midpoint formula:

(-7,-4) (-1,8)

(-7 + -1) /2 ,  (-4 +8) /2

-8/2 , 4/2

Midpoint = (-4,2)

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Answer:

30% is the correct answer.

Step-by-step explanation:

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Here we have to make 2 choices.

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\bold{\text{Required probability }= P(\text{boy as pianist first}) \times P(\text{girl as alternate})}

Formula for probability of an event E is given as:

P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}

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So, P(\text{boy as pianist}) is:

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For P(\text{girl as alternate}), number of favorable cases are 3 (total number of girls).

Now, one boy is already chosen as pianist so Total number of cases = Total number of students left i.e. (5 - 1) = 4

P(\text{girl as alternate}) = \dfrac{3}{4}

So, the required probability is:

\text{Required probability } = \dfrac{2}{5}\times \dfrac{3}{4} = \dfrac{3}{10} = \bold{30\%}

6 0
3 years ago
What is the greatest common factor of 100 and 20
Nady [450]
20
20 = 1 x 20
100 = 5 x 20
6 0
2 years ago
Read 2 more answers
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