The missing factor is (a -1) I believe. If you foil (5a + 9)(a - 1) you would get 5a^2 + 4a - 9.
So you would just have to divide 20/7 to get the percentage of it.
The answer would be 2.85%.
Answer:
<u>There is no restriction to domain:</u>
<u>The range is to vertex coordinate of 1:</u>
Answer:
The probability of both dice having the same number is 636, as there are 36 different outcomes, 6 of which have two of the same number, i.e. (1,1),(2,2),....
The expected number of rolls of this type in 100 pairs of dice rolls is 100∗636
