Answer:
r=4
Step-by-step explanation:
15r-6r=36
9r=36
r=36/9
r=4
As a formula, you're saying 4*(n-7)=32
This solves to n-7 = 8, so n=15
Elimination, Multiply the second equation by -1, then add the equations together.
We have 1.5 hours 30 minutes = 120 minutes;
1 hour 15 minutes = 75 minutes;
1.25 minutes = 85 minutes;
75 < 85 < 120
The median is 85 minutes.
Finally, 1 hour 15 minutes is the median.
Answer:
The slope of the line is 2.
This means that Jan runs 2 laps every 1 minute.
