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Vikentia [17]
3 years ago
11

In a class of 22 students, 13 have a brother and 15 have a sister. There are 3 students who do not have any siblings. What is th

e probability that a student has a brother given that they do not have a sister?
Mathematics
1 answer:
Aneli [31]3 years ago
7 0

Answer:

1/4

Step-by-step explanation:

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A bag contains 6 red marbles, 2 white marbles, and 1 gray marble.You randomly pick out a marble,record its color,and put it back
Dominik [7]
You should expect 5. There is one grey marble out of 9 total, and that can be expressed as 1/9. Since you repeat it 45 times, it's 1/9 45 times, or 1/9(45). 

\frac{1}{9} * \frac{45}{1}

1*45 is 45

9*1 is 9.

45/9 is 5.
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<em>Be sure to choose which answer is Brainliest!</em>
8 0
3 years ago
Please Help!!!!! I have a math test and I am not good at this stuff. and here is a hint: don't use the 10.
Talja [164]
A. 12•8=96, 96/2=48, 48•4=192, 12•12=144, 192+144=336
5 0
3 years ago
I don't understand this at all ( PICTURE ) please help with a simple explanation if you can. 15 Points and Marking Brainliest, R
Lelu [443]
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5 0
3 years ago
Can I take a picture of the problem and upload for you to see?
eduard
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6 0
2 years ago
Let f (x ) = 3x² - 4 and let g (x) = 2x + 1. <br> Find the value of f[g(2)].
stepan [7]

Answer:

The value of f[g(2)] is 71.

Step-by-step explanation:

We need to find f[g(2)].

The first step is finding f[g(x)]

We have that:

f(x) = 3x^{2} - 4

g(x) = 2x + 1

To find f[g(x)], the first step is replacing each x is f by g(x). So

f(g(x)) = 3(2x+1)^{2} - 4

Now we replace x by 2

f(g(2)) = 3(2*2+1)^{2} - 4 = 75 - 4 = 71

The value of f[g(2)] is 71.

3 0
3 years ago
Read 2 more answers
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