There are 9 students in a class: 5 boys and 4 girls. If the teacher picks a group of 4 at random, what is the probability that e veryone in the group is a boy?
1 answer:
Answer:
The probability is 0.0397.
Step-by-step explanation:
There are 9 students in a class: 5 boys and 4 girls.
The teacher picks a group of 4 at random.
So, the probability that everyone in the group is a boy is given by :
Or
Hence, the probability is 0.0397.
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Teri had 7/9 of a sandwich, you need to find a common denominator for 2/3. Multiply 2/3 by 3 which is 6/9. (6/9 is how much they ate) Then you subtract 7/9 by 6/9 (7/9-6/9=1/9)
Answer:
x+4x = 60
Step-by-step explanation:
5x=60
x=12
4x=48
answers are 12 and 48
Solution
For this case we can do the following:
And then if we multiply we got:
Answer:
19.2
Step-by-step explanation:
Cosine rule :
c will always be the hypotenuse.
a and b can be any if the opposite or the adjacent.
\sqrt{369}=19.20937...
