Monicaamm12983
06.01.2021 •
Mathematics
Carla and Andrew have 29 chocolate chip cookies. Andrew has 8 more than twice Carla’s cookies. How many cookies does each person have?
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Ответ:
Step-by-step explanation:
29 cookies
Carla has X cookies
Andrew has 8+ 2X cookies
x + 8 + 2x = 29
3x = 29-8
3x= 21
x = 7 / Carla has 7 cookies
8+ 2x = 8+2•7= 8+14=22 / Andrew has 22 cookies
Ответ:
2 hours and 45 minutes
Step-by-step explanation:
Elapsed time
The hours-minutes time format requires us to come up with suitable methods to compute elapsed times between two or more different times. If the initial time is 10:30 pm, it will need to go for 1:30 hours to midnight. Then, to reach 1:15 am, we need one hour and 15 minutes more, so it's been
1:30 + 1:15 = 2:45
Elapsed time: 2 hours and 45 minutes