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jasenka [17]
3 years ago
15

School started at 8:05 a.m and ended at 2:40p.m. the work below shows Erica's calculation of the length of the school day

Mathematics
1 answer:
harina [27]3 years ago
7 0

Answer:

B. She subtracted the end time from the start time and

D. She did not account for a.m. and p.m. in the start and end times.

Step-by-step explanation:

The school started at 8:05 a.m. and ended at 2:40 p.m.

And the length of the school day is calculated by Erica and it is shown in the attached photo.

See the attached photo.

Erica has done two errors which are  

B. She subtracted the end time from the start time and  

D. She did not account for a.m. and p.m. in the start and end times. (Answer)

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Ken earns 54 dollars at his part-time job on Friday

Given that Total amount earned by ken and his wife at their part-time job on Friday= $174

Money earned by ken= x dollars

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Total amount earned by ken and his wife at their part-time job on Friday=  x dollars + (2x+12) dollars

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Hence,Ken earns 54 dollars at his part-time job on Friday

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2 years ago
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A. $2.25

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