# Math

posted by .

4 hours 18 min 11 sec- 3 hours 15 min 4 sec = 1 h 3 min 7 s

6 hours 7 minutes 42 sec + 2 hrs 12 min 38 sec=
8 hours 19 minutes 80 seconds

• Math -

First one is right.

Second, 80 seconds = 1 minute 20 seconds

## Similar Questions

1. ### chemistry

a car covers a distance of 200 mile in 3 hours. How many kilometers will it travel in 25.0 minutes?
2. ### Math

1. Find y'(x) when xsecy - 3y sinx = 1 a) (3ycosx - sec y) / (xsec^2y - 3sinx) b) (3cosx - sec x) / (xsecytany - 3sinx) c) (3ycosx - sec y) / (xsecytany - 3sinx) d) (3ycosx - secytany) / xsec^2y - 3sinx) This is what I did: xsecy - …
3. ### math

289 min = 4 hr and 49 min 213 min = 3 hr and 33 min 345 min = 5 hr and 45 min 197 min = 3 hr and 17 min I have to change these minutes on the left to hours and minutes. could you check if I have them correctly. Thank you for your help
4. ### Math

What is the easiest way to figure this out?
5. ### math

What is the conversion factor sequence for units from ft./sec. to km./hr.?
6. ### Math

What is the sequence of conversion factors for units if you change from ft/sec. to km/hour?
7. ### math

use : .# x 6 = minutes I did try to do it but came up with numbers like 5.732360456. Plz help P.S. Trying to help my son but can't 0.5 ='s how many hours and minutes 2.5 ='s how many hours and minutes 2.3 ='s how many hours and minutes …
8. ### Math

1. Mackenzie spent a lot of time on her project for Columbus Day. On Monday she worked for 2 hours and 33 minutes on making a poster. On Tuesday she worked for 1 hour and 28 minutes drawing a picture of Columbus. On Wednesday she spent …
9. ### Math

1. Mackenzie spent a lot of time on her project for Columbus Day. On Monday she worked for 2 hours and 33 minutes on making a poster. On Tuesday she worked for 1 hour and 28 minutes drawing a picture of Columbus. On Wednesday she spent …
10. ### Math

Express 2 hours 16 min 30 sec as a fraction of 5 hours 25 min

More Similar Questions