Answer:

Step-by-step explanation:
<u><em>Given: </em></u>
Distance = S = 18 km
Time = t = 20 min = 20/60 = 0.33 hours
<u><em>Required:</em></u>
Average Speed = <v> = ?
<em><u>Formula:</u></em>
Average Speed = Total Distance Covered / Total Time Taken
<u><em>Solution:</em></u>
A . S = 18 / 0.33
A.S = 54 km/hr
Answer:
-1
-3
1/3
Step-by-step explanation:
Put each of the numbers in for y and solve for x
8 = 3x -1
9 = 3x
x -3
Answer:
Use fx graph to draw this so u can see the graph easier
Step-by-step explanation:
Answer:
The degrees of freedom for this problem are 21
Step-by-step explanation:
Degrees of freedom:
When testing an hypothesis involving two samples, the number of degrees of freedom is given by:

In which
is the size of the first sample and
is the sample of the second sample.
In this question:
Samples of 9 and 14, so 
The degrees of freedom for this problem are


The degrees of freedom for this problem are 21
Answer:
0.22 gallons per person
Step-by-step explanation:
2/9 gallons = 0.22 gallons