72° since it’s 6 degrees per minute you can do 6x12 and that will get you 72°
Answer:
K = 4/3 or 1 1/3
Step-by-step explanation:
4/3 or 1 1/3 - 2 is 2/3
2/3 times 9 is 6
Hope this helps ;)
I am Pretty sure it’s b but I wouldn’t be 100%
We need to write the sum in this form:

So, we need to find an appropriate sequence, such that
is the i-th even number.
You can easily check that this series is
. In fact, you have

and so on. Finally, we have to observe that we want the first 50 elements of this sequence, since
.
So, the sum can be written as
