Answer:
The common ratio is 
Step-by-step explanation:
Geometric sequence:A geometric sequence is a sequence in which the ratio of any term to the preceding term of that term is always constant.
Common ratio: The ratio of any term to the preceding term of that term.
The
term of a geometric sequence is represented by
.
The
term of the sequence = a.
The sum of first n term is

The common ratio = r.
Given geometric sequence,
,
,
,
........
The common ratio is




Answer:
d or c
Step-by-step explanation:
The answer to this question is B
Answer:

Step-by-step explanation:
Pythagorean theorem:

Alternative:

Alternative (derived from the Pythagorean theorem):
All 45-45-90 triangles have side lengths
, where
is the hypotenuse. Since this triangle's hypotenuse is
, its sides are
.