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inna [77]
3 years ago
15

Can you guys help me

Mathematics
2 answers:
svetoff [14.1K]3 years ago
7 0
5. -5
6. -45
7. 45
8. 5
Genrish500 [490]3 years ago
5 0

Hello there!

-15:3=-5

-15*3=-45

-15*(-3)=45

-15:(-3)=5

Explanation:

Keep in mind that if we multiply or divide by a negative number, we get a positive number.

Hope this helps!

~Just a joyful teen

GraceRosalia :)

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Sebastian swam laps every day in the community swimming pool. He swam 45 minutes each day, 5 days each week, for 12 weeks. In th
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Answer:

\text{Average rate}=\frac{\text{40 laps}}{\text{ hour}}

Step-by-step explanation:

Please consider the complete question.

Sebastian swan laps every day in the community swimming pool. He swam 45 minutes each day, 5 days each week, for 12 weeks. In that time, he swam 1800 laps. What was his average rate in laps per hour?    

Let us convert time taken into hours as:

\text{Days}=5\times 12=60

\text{Minutes}=60\times 45

1 hour = 60 minutes. To convert minutes into hours, we will divide total minutes by 60.

\text{Hours}=\frac{60\times 45}{60}=45

Now, we will divide 1800 by 45 to find average rate in laps per hour as:

\text{Average rate}=\frac{\text{1800 laps}}{\text{45 hours}}

\text{Average rate}=\frac{\text{40 laps}}{\text{ hour}}

Therefore, Sebastian's average rate is 40 laps per hour.

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