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Sidana [21]
3 years ago
9

The person swims at 4 kilometers per hour and runs at 20 kilometers per hour. For what distance x is the total time for swimming

and running 2 hours? Round to the nearest tenth of a kilometer. (Hint: Time swimming + time running = 2 hours, and distance rate = time.)
Mathematics
1 answer:
gtnhenbr [62]3 years ago
4 0

Answer:

Amm ask to your teacher not to this apps ok

Step-by-step explanation:

THANK you

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Car is driving at 30 kilometers per hour. How far in meters does it travel in 3 seconds?
Alenkasestr [34]

Answer:

25 meters

Step-by-step explanation:

30 km/hr = (30 km/1 hr)*(1000 m/1 km)*(1 hr/60 min)*(1 min/60 sec)

30 km/hr = (30*1000*1*1)/(1*1*60*60) meters per second

30 km/hr = 8.3333333333 m/s (approximate)

----------

The speed or rate is r = 8.3333333333 meters per second approximately, and the time is t = 3 seconds, so,

distance = rate*time

d = r*t

d = 8.3333333333 * 3

d = 24.9999999999

Due to rounding error, the true answer should be d = 25. We can see this if we opted to use the fraction from of 8.3333... instead of the decimal representation which isn't a perfect exact measurement.

4 0
3 years ago
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Answer:

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Step-by-step explanation:

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6 0
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Is is 6 2/7 rational or irrational
steposvetlana [31]

Step-by-step explanation:

6 2/7is rational

-19is rational but next I dont know

6 0
3 years ago
Which of the following mathematical operations can be used with functions?
Temka [501]
The correct answers among all the other choices are A) Addition, B) Subtraction, C) Multiplication, and D) Division. These mathematical operations can be used with functions. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help. 
6 0
3 years ago
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