Answer with Step-by-step explanation:
For any complex number x+iy the polar form is represented as

where

Part a) x+iy = -1+i
Thus 
Thus using De-Morvier's theorem

Part 2) x+iy = 1+3i
Thus 
Thus using De-Morvier's theorem

In order to calculate the mean (average) you add up all the numbers and divide the total by how many numbers there are.
The sum of the data set is 468.
There are 5 numbers in the set.
468 divided by 5 is 93.6.
The answer is already to the nearest tenth, so the mean is 93.6.
Answer:
it is because 20 + 20 is 40 and then 40 - 20 = 20
first bar: 4(high),21(across)
second bar: 9(high),22(across)
third bar: 12(high),14(across)
Answer:
124 miles
Step-by-step explanation:
simplify mixed fraction as
6 1 / 5 = 31/5 inches
on the map 1 inch represent 20 miles
31/5 × 20
= (31 × 20)/5
= 620/5
= 124 miles
the distance between those two towns will be 124 miles.