The first thing we must do for this case is find the amount of minutes we have then:
"45 minutes each day, 5 days each week, for 12 weeks":
(45) * (5) * (12) = 2700 minutes.
We consider the following conversion:
1 hour = 60 minutes.
Therefore the number of hours is:
(2700) * (1/60) = 45 hours
Finally the average rate in laps per hour is:
Average = (1800) / (45)
Average = 40 laps / hour
Answer:
his average rate in laps per hour is:
40 laps / hour
that is the solution to the simultaneous equation
Answer:
Jo started decelerating at the 10th minute
His average speed for the last 30 minutes of the journey is 4/30 km/minute
Step-by-step explanation:
To get what Jo did at 10 minute, we look at the graph.
At the 10th minute, we can see that we have a sharp turn from the top to the zero position at the 20th minute
so we can say that Jo started deceleration at the 10th minute
For the last 30 minutes of the journey, he travelled a distance of 4km
So, mathematically, his average speed will be;
Distance/ time = 4km/30 minutes = 4/30 km/minute
2(65)=130
185-130=50
He will need to drive 50 more miles.
3x+5=2x-10
-2x -2x
X+5=-10
-5 -5
X=-15
3(-15)+y=5
-45+y=5
+45 +45
y=50
2(-15)-y=10
-30-y=10
+30 +30
-y=40
Divide by -1 on both sides
y=-40
