Answer:
134/15 or
8 14/15
Step-by-step explanation:
-2
----
5
Because perpendicular is the opposite and the opposite of -5/2 is -2/5
Answer: a
Step-by-step explanation:
The underlying arithmetic progression is
-15, 0, 15, 30, ...
starting with
and with a common difference of
between terms. Recursively, this sequence is given by

So we have



and so on, so that the explicit rule for the sequence is

for
.
The series consists of 15 terms, since

So we have

and the answer would be B.
Answer:
a)September, August, July
b)October