a bicyclist started riding at 8 am and at 4.5 miles to 8;18 am to 7.5 miles to 8;48 am what was the bicylists rate of speed in mph
8 am at 0
8:18 at 4.5
8:48 at 7.5 miles ???
18 min = .3 hour
48 min = .8 hour
in first .3 hours speed = 4.5/.3 = 15 mph
in next .5 hours = speed = 3/.5 = 6 mph
average speed for the whole trip = 7.5 miles/.8 hours = 9.375 mph
lit hw is done
Thank you so much!
To calculate the bicyclist's rate of speed, you need to determine the time it took to travel the given distances and then use the formula:
Rate of Speed = Distance / Time
First, let's calculate the time it took for each segment:
From 8 am to 8:18 am: 18 minutes = 0.3 hours
From 8:18 am to 8:48 am: 30 minutes = 0.5 hours
Now, substitute the values into the formula for each segment:
Rate of Speed for the first segment = 4.5 miles / 0.3 hours
Rate of Speed for the second segment = 7.5 miles / 0.5 hours
Calculate the rates of speed:
Rate of Speed for the first segment = 15 miles per hour
Rate of Speed for the second segment = 15 miles per hour
Therefore, the bicyclist's rate of speed is 15 miles per hour.