Answer:
21
Step-by-step explanation:
Try using this notation: a(n) and not an.
an=n^3-2n becomes a(n) = n^3 - 2n.
Then a(1) = 1^3 - 2(1) = 1 - 2 = -1
a(2) = 2^3 - 2(2) = 8 - 4 = 4
a(3) = 3^3 - 2(3) = 27 - 6 = 21
Answer:
A
Step-by-step explanation:
It would be B because she spends more than 25%
Answer:31t 980kg.
Step-by-step explanation: 1 tonne is 1000kg.
so 40 tonnes is 40000kg.
40 t -8 t =32t. Now we have to remove the 20kg, leaving 31t and 980kg.
In a deck of cards there are total of 52 cards.
But in our case we have to check the probability of red 8, which is either the 8 of diamond or of heart.
So the number of events of which we have to find probability is 2. And total number of events is 52.
So the probability will be
2/52 = 1/26 = 0.0384615
