Answer:
Step-by-step explanation:
Lets call 
the the still-air speed of the plane and 
the speed of the wind. On the first part the speed of the plane relative to the ground will be 
, and on the second part it will be 
.
We know that the distance d=400 miles on the first and second parts are the same, so by the definition of velocity we will have:
Or:
Adding both equations:
Which for our values is:
If instead of adding, we substact, we would have:
Which for our values is:
(3,-1)
Use the V.L.T (Vertical Line Test) and plot the graph points, if you can draw a straight line through any points it cannot be a function.
Answer:
-7
Step-by-step explanation:
To find the common difference, you subtract a term from the term after it. For example, in the problem, you can subtract 13 from 6:
6 - 13 = -7
To check you can do the same thing with other consecutive numbers in the sequence like:
-1 - 6 = -7
Answer:
1/4
Step-by-step explanation:
3/4 - 1/2 = 3/4 - 2/4 = 1/4 <===
Kala spent 1/4 of an hr ( or 15 minutes) more on her history
