Answer:
Sorry I dont know the answer.
Answer:
see explanation
Step-by-step explanation:
(8)
the common ratio r, of a geometric sequence is
r =
=
= ......
r =
=
= 8
(9)
The simplest way to evaluate the sum is to substitute k = 3, 4, 5, 6 into each term and sum them
(- 9 + 20) + (- 12 + 20) + (- 15 + 20) + (- 18 + 20)
= 11 + 8 + 5 + 2 = 26
Answer: 103/15
Step-by-step explanation:
We can simplify the right-hand side to be
.
This means we need to solve:

Answer:
42 / 7 = 6
Step-by-step explanation:
There are 6 rows in the class room.