Step-by-step explanation:
everything can be found in the picture above. Hope this helps
Answer:
You must subtract all terms of the numerator being subtracted out, not just the first term.
The negative 2 should have been subtracted out to get a numerator of x+1-x+2
The simplified numerator of the difference should be 3, not –1.
Is this how your problem is written (see attached image) If so, the answer is A. 4ab^2
Answer:
Step-by-step explanation:
Let us assume that if possible in the group of 101, each had a different number of friends. Then the no of friends 101 persons have 0,1,2,....100 only since number of friends are integers and non negative.
Say P has 100 friends then P has all other persons as friends. In this case, there cannot be any one who has 0 friend. So a contradiction. Hence proved
Part ii: EVen if instead of 101, say n people are there same proof follows as
if different number of friends then they would be 0,1,2...n-1
If one person has n-1 friends then there cannot be any one who does not have any friend.
Thus same proof follows.
Answer:
A
Step-by-step explanation:
The expected profit would be the sum of all the possibility multiplied. It means,
<em>"We need to multiply the profit by its possibility and add it with the product of the loss and its possibility."</em>
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This will be the expectation, or expected profit.
Let's do it:
Expected Profit = 
The correct answer is A