Just subtract 622 feet from 486 feet to get the change in elevation. The result will be negative because your friend's house is at a lower elevation than yours.
Now find the mean change in elevation per mile by dividing (486 ft - 622 ft) by 4 miles:
-136 ft
----------- = -34 ft/mile
4 mi
Answer:
C
Step-by-step explanation:
b) option C
C.E cannot affect F and vice versa because the people were randomly selected, so the events are independent.
because randomly selected events are mutually exclusive events.
Answer:
Solutions are x =4 and y = 1
Step-by-step explanation:
In this equation substitute 
, we get
now substitute y =1 in x equation,
Solutions are x =4 and y = 1
