Answer:
6 2/3 minutes
Step-by-step explanation:
Their rates in "jobs per hour" are ...
(60 min/h)/(15 min/job) = 4 jobs/h
and
(60 min/h)/(12 min/job) = 5 jobs/h
So, their combined rate is ...
(4 jobs/h) + (5 jobs/h) = 9 jobs/h
The time required (in minutes) is ...
(60 min/h)/(9 jobs/h) = (60/9) min = 6 2/3 min
Working together, it will take them 6 2/3 minutes.
Answer:
C
Step-by-step explanation:
6.974 rounded to the nearest tenth is 7.0, because 7 is more than 5, and since 9's there, we make that 6 to a 7.
Answer:
- 10.2n - 1
Step-by-step explanation:
You need to add the expressions:
- 2.4n - 3 + (- 7.8n +2)
- 2.4n - 3 - 7.8n + 2
- 10.2n -1
166
I guess you just subtract the numbers
297-131=
Or there is something am I missing on here
