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Vsevolod [243]
3 years ago
6

Elena runs for 28 seconds and finishes at 250 seconds what is her velocity please explain

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
5 0

Answer:

The velocity is 8.93 meters/second.

Step-by-step explanation:

It is given that  Elena runs for 28 seconds and finishes at 250 meters.

Here the displacement is 250 meters and the time is 28 seconds.

We know that  V=\dfrac{\text{Displacement}}{\text{Time}}

Substitute displacement = 250 and time = 28 in above formula.

V=\dfrac{250}{28}

V\approx 8.93 meters/second

Hence, the velocity is 8.93 meters/second.

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Answer:

\frac{25}{10} = \frac{5}{2} is in proportion.

\frac{3}{4} = \frac{8}{10} is not in proportion.

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\frac{3}{4} = \frac{15}{20} is in proportion.

Step-by-step explanation:

The first example is \frac{25}{10} = \frac{5}{2} and it is in proportion.

This is because, you will get the same simplest fraction (\frac{5}{2}) from the fraction \frac{25}{10} by dividing its numerator and denominator by 5.

The second example is \frac{3}{4} = \frac{8}{10} and it is not in proportion.

This is because, you can not  get the simplest fraction (\frac{3}{4}) from the fraction \frac{8}{10} after simplification.

The third example is \frac{2}{8} = \frac{3}{12} and it is in proportion.

This is because, you will get the same simplest fraction (\frac{1}{4}) from the fraction \frac{2}{8} by dividing its numerator and denominator by 2 and from the fraction \frac{3}{12} by dividing its numerator and denominator by 3.

The fourth example is \frac{3}{4} = \frac{15}{20} and it is in proportion.

This is because, you will get the same simplest fraction (\frac{3}{4}) from the fraction \frac{15}{20} by dividing its numerator and denominator by 5. (Answer)

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Because two diffrent students with two diffrent Roll number may have same marks.

Hence the foolowing options holds True in case of a function.

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D) one input to one output or many inputs to one output.

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