We call a full circle or a full rotation 360 degrees. There's nothing magic
or mathematical about that number. It was invented by people. It could
have been any number they wanted.
But it was a great choice because it has a lot of factors. With 360 degrees
in a full rotation, you can split up a full rotation into 2, 3, 4, 5, 6, 8, 9, 10, 12,
15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, or 180 equal pieces, without
ever slicing up a degree !
Answer:
What system of equations?????????
Step-by-step explanation:
Answer:
The distance between the cities is 81 miles
Step-by-step explanation:
* Lets explain how to find a distance between two points
- The distance between the two pints
and
is

* Lets solve the problem
∵ City A located at point (55 , 11)
∵ City B located at point (116 , 65)
- Let point
= (55 , 11) and point
= (116 , 65)
∴
and 
∴
and 
- By using the rule above
∴ 
∴ The distance between the cities is 81 miles
Slope is (y2-y1)/(x2-x1)
(-3-4)/(-1- -1) = -7/0
since numbers are not divisible by 0
the slope is undefined
the line is a vertical line with an undefined slope