Answer:
? = 2
Step-by-step explanation:
<u>Step 1: Substitue 1 for A and 3 for B</u>
<u /> = ?
= ?
= ?
= ?
2 = ?
Answer: ? = 2
Okay here is another math problem I'll give a brainliest for the right answer!
1 answer:
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Let's help Julia to solve this problem. Given the term:
We need to simplify it. So, we will take a look at the identities above, thus, from the second identity:
∴
And from the five equation:
∴
Substituting these identities in the term:
In fact, your answer is correct.
We need to simplify it. So, we will take a look at the identities above, thus, from the second identity:
∴
And from the five equation:
∴
Substituting these identities in the term:
In fact, your answer is correct.
Given:
Number of students who has a cat and a dog = 5
Number of students who has a cat but do not have a dog = 11
Number of students who has a dog but do not have a cat = 3
Number of students who neither have a cat nor a dog = 2
To find:
The probability that a student has a cat given that they do not have a dog.
Solution:
Let the following events:
A = Student has a cat
B = Do not have a dog
Total number of outcomes is:
The probability that a student has a cat but do not have a dog is:
The probability that a student do not have a dog is:
The conditional probability is:
Therefore, the probability that a student has a cat given that they do not have a dog is .