I think it would be division :)
I think that it is saying that 8:15-8:45 is 7.5 miles right? Then 8- 8:15 is 4.5 and you are trying to find the average of an HOUR. So in order to get an hour you need 15 more mins. Which is 4.5 miles according to the chart. (8-8:15). So 4.5+4.5+7.5=16.5. Divided by three is 5.5 miles per hour. I'm not sure but this is what I would do.
Answer:
Step-by-step explanation:
Given inequality is
Now we need to find the graph of .
Which can be done into two parts:
First graph the line then shade the graph for inequality sign
Graph the line
we can plug any number for x say x=0 to find the y-value
4x-8y=9
4*0-8y=9
0-8y=9
-8y=9
y=-1.125
Hence first point is (0,-1.125)
Similarly we can plug y=0 then solve for x
4x-8y=9
4x-8*0=9
4x-0=9
4x=9
x=2.25
hence 2nd point is at (2.25,0)
Now graph both points and join them by a straight line.
Since used inequality is so we use solid line not the dotted line.
Shading the graph:
we can pick any test point which is not on the line 4x-8y=9 say (0,0) then plug into original problem to see if that point satisfies the original problem or not.
Which is TRUE.
TRUE means shade in direction of test point otherwise we graph in opposite direction of test point.
Now final graph will look like the graph attached below:
Answer:
7 units
Step-by-step explanation:
Given
Required
The units that minimize the average cost
Differentiate
Equate to 0 to solve for x
Collect like terms
Divide by 98
Rewrite as:
Take square roots of both sides
Take multiplicative inverse of both sides
Only positive value will produce critical value. Hence, 7 units will produce the minimum average cost