Answer:
78
Step-by-step explanation:
Answer:
See below. Sean is in error.
Step-by-step explanation:
There are a total of 15 rolls of the cube.
If we count the number of 1's that are rolled we get 5 which is more than any other number. So the EXPERIMENTAL probability of getting a 1 is 5/15 = 1/3.
But this is NOT the THEORETICAL probability.
If we assume that it is a fair cube then the theoretical probability of a 1 is 1/6.
Each number has an equal theoretical probability of 1/6.
The denominator of the second fraction is the difference of squares, so can be factored using the formula for that.
(n^2 -4) = (n -2)(n +2)
Now, you will note that the second fraction has a numerator that is equal to one of the factors in the denominator. In other words, the whole fraction can be simplified to ...
(n +2)/((n +2)(n -2)) = 1/(n -2) . . . . with the restriction n≠-2
This reduced form of the fraction has the same denominator as the first fraction, so you can say that the lowest common denominator is that: (n -2).
_____
If there is some reason you don't want to reduce the second fraction, the lowest common denominator will be (n -2)(n +2).
Answer:
110cm square
Step-by-step explanation:
Area of trapezium(regardless whatever trapezium)=
1/2 (a+b)(height)=1/2 (9+13)(10)=110cm square
Answer:
Step-by-step explanation:
7 degrees
