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3 years ago

18-3+5-12÷4. I am needing help on how to work this problem

Mathematics

1 answer:

AleksandrR [38]3 years ago

8 0

Answer

Step-by-step explanation:

12 divided by 4=3

18-3+5-3

5 minus 3 = 2

18-3+2

18 minus 3 = 15

15+2= 17

answer is 17

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Answer:

30% is the correct answer.

Step-by-step explanation:

Total number of boys = 2

Total number of girls = 3

Total number of students = 5

To find:

Probability that the pianist will be a boy and the alternate will be a girl?

Solution:

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:

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

For $P(\text{boy as pianist})$ , number of favorable cases are 2 (total number of boys).

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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).

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3 years ago

What is this answer?

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Answer:

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