Answer:
-5
Step-by-step explanation:
Area of triangle = base x height x 1/2
Area of the triangle:
= 12 x 15 x 1/2
= 180 x 1/2
= 90 units^2
No. and i will keep it like that
Answer:
The common ratio of the geometric sequence is:

Step-by-step explanation:
A geometric sequence has a constant ratio 'r' and is defined by

where
Given the sequence

Compute the ratios of all the adjacent terms: 

The ratio of all the adjacent terms is the same and equal to

Therefore, the common ratio of the geometric sequence is: