Answer:
hello there
ok so the answer is 4 + 
Step-by-step explanation:
hope this helps!
A. x∧2+(x+20∧2=150∧2 is correct.
because you need to plug the numbers into the pathagoreum theorum which is
a∧2+b∧2=c∧2
150 is our c because it is the side right accross from the right angle.
which number is a and which number is b does not matter.
x is the distance north so we can assign that to a and the distace east is north plus 20 so we can assign b to x+20.
a. Recall that
For 
, we have
By integrating both sides, we get
If 
, then
so that
We can shift the index to simplify the sum slightly.
b. The power series for 
can be obtained simply by multiplying both sides of the series above by 
.
c. We have
Answer:
20
Step-by-step explanation:
cause when you do 3=4 equals 4 then multiply 5 then you have 20
