Step-by-step explanation:
Center: (−7,4)(-7,4)
Radius: 7
Answer:
4
Step-by-step explanation:
It's AoPS question
Answer:
17
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given the geometric sequence:
5, −10, 20, −40, ...
The first term is a = 5
And the common ratio = r = -10/5 = -2
The general rule of geometric sequence is

So, the rule for the given geometric sequence is:

Answer:
-24 and -4
Step-by-step explanation:
if you add -24 and -4 you get -28
and if you multiply two positives by two negatives then you get a positive