For a family with 3 children, what is the probability that they have exactly 2 boys and 1 girl?
2 answers:
Answer:
1/4
Step-by-step explanation:
There are a total of four possibilities,
- Three girls
- Three boys
- Two girls and One boy
- Two boys and One girl
and only one of those options are 2 boys and 1 girl
Answer:
Step-by-step explanation:
Possibilities (G for girls and B for boys):
GGG
GGB
GBG
<u>GBB
</u>
BGG
<u>BGB
</u>
<u>BBG
</u>
BBB
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This is a right triangle. We know that
Therefore,
Now we have:
A= 2 to the power of -1
Because if it's the same base no in multiplication we add the indices and in division we subtract the indicies
Since 3 x 3 = 9, 9 is divisible by 3. So, 3 would be a factor of any number divisible by 9
Answer: 1/5
Step-by-step explanation: Since there are 5 blue/green marbles in the bag of 20 it would be 5/20 or 1/5.
Answer:
x=17/4
Step-by-step explanation:
(x-3)/(x+2)=1/5
cross product
1(x+2)=5(x-3)
x+2=5x-15
5x-x-15=2
4x-15=2
4x=2+15
4x=17
x=17/4
