Answer:
12
Step-by-step explanation:
7c=84
c=84/7
c=12
Answer:

Step-by-step explanation:
The nth term of the sequence is

To get the first term, substitute n=1,

To get the second term, substitute n=2,

To get the third term, substitute n=3,

The sum of the first three terms is

We could also use the formula
to get the same result.
Answer:
8
Step-by-step explanation:
Because you left one pence then it is 9-1=8
0.55 as a fraction is 11/20