Answer:
Step-by-step explanation:
Given two points, the slope of the line can simply be calculated as
Divide 8 to five u might get the answer
Given:
The geometric sequence is
To find:
The sum of first 8 terms of the given geometric sequence.
Solution:
We have,
Here, the first term is 4 and the common ratio is
The sum of first n terms of a geometric sequence is
Where, a is the first term and r is the common ratio.
Putting n=8, a=4 and r=-3, we get
Therefore, the sum of first 8 terms is -6560.
Answer:
Change 4020 to 4000 + 25.
Then use the distributive property.
4025 * 5 = (4000 + 25) * 5 = 4000 * 5 + 25 * 5 = 20,000 + 125 = 20,125