1 mile in 45 seconds is 80 mph. There are 60 seconds in a minute and 60 minutes in an hour; 60 * 60 = 3,600 seconds in an hour. 3,600 / 45 seconds = 80. And to cross-check: 80 mph * 5,280 feet in a mile = 422,400 feet per hour / 60 = 7,040 feet per minute / 60 = 117 1/3 feet per second * 45 seconds = 5,280 feet in 45 seconds.
1 hour = 60 minutes 1 minute = 60 seconds time = distance/speed = 28 miles/45 mph = 28/45 hour = 28/45 × 60 minutes = 37 1/3 minutes = 37 minutes 1/3 × 60 seconds = 37 minutes 20 seconds
1 minute = 60 seconds 1 hour = 60 mins → 45 mins 45 seconds = 45 + 45/60 mins = (45 + 45/60)/60 hours = 61/80 hours distance = speed × time → distance = 56 mph × 61/80 hours = 42.7 miles.
3 hours, 35 minutes, and 45 seconds plus 1 hour, 45 minutes and 30 seconds is 5 hours, 21 minutes, and 15 seconds.
1 hour = 60 minutes so 1 hour 45 minutes = 60+45 = 105 minutes.1 hour = 60 minutes so 1 hour 45 minutes = 60+45 = 105 minutes.1 hour = 60 minutes so 1 hour 45 minutes = 60+45 = 105 minutes.1 hour = 60 minutes so 1 hour 45 minutes = 60+45 = 105 minutes.
105 minutes 6300 seconds :)
No hour. It's just 1 minute and 45 seconds.
45 sec / 1 hr = 45 sec / 3600 sec = 1/80
2160x in an hour.
1 mile in 45 seconds is 80 mph. There are 60 seconds in a minute and 60 minutes in an hour; 60 * 60 = 3,600 seconds in an hour. 3,600 / 45 seconds = 80. And to cross-check: 80 mph * 5,280 feet in a mile = 422,400 feet per hour / 60 = 7,040 feet per minute / 60 = 117 1/3 feet per second * 45 seconds = 5,280 feet in 45 seconds.
There are: 1 hour = 3600 seconds
3,600 seconds per hour.
An hour has 3600 seconds. 10 seconds is 1/360 of an hour.
There are 60 seconds per minute and 60 minutes per hour; therefore, there are 60 X 60 = 3600 seconds per hour. The stated rate is 1/45 mile per second. 1/45 X 3600 = 80 miles per hour.
There are 60 x 60 seconds in 1 hour = 3600 seconds In 2 hours there are 7200 seconds 0.75 of an hour is 45 minutes. There are 45 x 60 seconds in 0.75 hour = 2700 second Add these together to get 9900 seconds in 2.75 hours
There are 3,600 seconds in 1 hour
1/20 of an hour