Need help in subtracting
1 answer:
What you want to do here is relatively straightforward - you see that -6 is in the top left of the left matrix, and -5 is in the top left of the right matrix. In the resultant matrix, in the top left corner, you have (-6-(-5))=-6+5=-1 for your answer. Showing it visually, we have
![\left[\begin{array}{ccc}-6&-4\\6&0\\6&4\end{array}\right] - \left[\begin{array}{ccc}-5&5\\-4&-1\\6&-4\end{array}\right] = \left[\begin{array}{ccc}6-(-5)&-4-5\\6-(-4)&0-(-1)\\6-6&4-(-4)\end{array}\right]](https://tex.z-dn.net/?f=%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-6%26-4%5C%5C6%260%5C%5C6%264%5Cend%7Barray%7D%5Cright%5D%20-%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-5%265%5C%5C-4%26-1%5C%5C6%26-4%5Cend%7Barray%7D%5Cright%5D%20%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D6-%28-5%29%26-4-5%5C%5C6-%28-4%29%260-%28-1%29%5C%5C6-6%264-%28-4%29%5Cend%7Barray%7D%5Cright%5D%20)
![= \left[\begin{array}{ccc}-1&-9\\10&1\\0&8\end{array}\right]](https://tex.z-dn.net/?f=%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-1%26-9%5C%5C10%261%5C%5C0%268%5Cend%7Barray%7D%5Cright%5D)
Feel free to ask further questions!
Feel free to ask further questions!
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Answer:
c) Either A or B or both occur.
Step-by-step explanation:
Suppose that we have two events
Event A
Event B
We have that:
In which a a happens and b does not and is the probability that aboth events happen
By the same logic, we have that:
The union of events A and B is:
Which includes either one of them or both.
So the correct answer is:
c) Either A or B or both occur.