Step-by-step explanation:
are there any distances .
D) because only 4 is the common factor in the equation.

The formula of the sum of the arithmetic sequence:

calculate:

substitute

Your answer is:
.25+.10+.10+.05+.05=0.55
fraction:55/100
We want to calculate the following

Using the properties of exponents, we have that

So we have

So, if factor 10^-4 on the right side, we have

Note that

Then,

So we have that