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Romashka [77]
3 years ago
7

There are 9 students ain class 2 boys 7 girls and a teacher picks 4 at random what is the probability in the group that everyone

is a girl
Mathematics
1 answer:
marissa [1.9K]3 years ago
3 0

Answer:

2/3.

Step-by-step explanation:

Ok, so at first, the probability of the teacher picking a girl is 7/9. And then when she takes one girl, it is less, so the probability is 6/8. Then if she picks 2 more girls, then the probability of that would be 4/6, or 2/3.

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f(x) = (1 - 2x²)³

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3 years ago
Solve using substitution method x-y=11;3x+10y=-6<br> explain please
Tatiana [17]
Ok so for starters you want to choose an equation and solve for a variable.
So, I am going to choose x from the first equation.
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y=-7/3
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3 years ago
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The LCM will be the values that are common to both factors. From the given values the LCM will be 2² * 3² * 5

<h3>Least common multiple</h3>

LCM is the lowest number that can divide all other numbers given in an  expression.

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From the given values the LCM will be 2² * 3² * 5

Learn more on LCM here: brainly.com/question/233244

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