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docker41 [41]
3 years ago
8

Help!!!! Please just number 11 worth 90 points!!!!!

Mathematics
2 answers:
timurjin [86]3 years ago
3 0

Answer:

6.75 hrs are missing

Step-by-step explanation:

First, change all fractions into decimals:

8 = 8

7 1/4 = 7 + 0.25 = 7.25

8 1/2 = 8 + 0.50 = 8.50

Next, add all numbers gotten together:

8 + 7.25 + 8.50 = 23.75

Subtract the number gotten from the total

30.5 - 23.75 = 6.75

~


BARSIC [14]3 years ago
3 0
The answer would be 6.75 Hrs.
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Step-by-step explanation:

Let

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we know that

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In this problem we have

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