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Damm [24]
3 years ago
8

A circular running track is 14 mile long. Elena runs on this track, completing each lap in 120of an hour. What is Elena’s runnin

g speed? Include the unit of measure.
Mathematics
1 answer:
rusak2 [61]3 years ago
3 0

Answer:

Step-by-step explanation:

Alright, so apparently super fast Elena can run 14 miles in 120th of an hour, so you would have to multiply 14 by 120 which is 1680

This girl can run 1680 miles per hour

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If the radius of a circle is 5 centimeters, how long is the arc subtended by an angle measuring 60°? A) 3 5 π cm B) 5 2 π cm C)
devlian [24]

Answer:

The length of the arc is \frac{5\pi}{3} centimeters.

Step-by-step explanation:

The length of an arc (\Delta s) with a given central angle is determined by the following expression:

\Delta s = \frac{\theta}{360^{\circ}}\cdot 2\pi\cdot r

Where:

r - Radius, measured in centimeters.

\theta - Central angle, measured in sexagesimal degrees.

Given that r = 5\,cm and \theta = 60^{\circ}, then:

\Delta s = \frac{60^{\circ}}{360^{\circ}} \times 2\pi \times 5\,cm

\Delta s = \frac{5\pi}{3}\,cm

The length of the arc is \frac{5\pi}{3} centimeters.

4 0
3 years ago
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Answer:

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Step-by-step explanation:

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a

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Yes it is I believe
5 0
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Read 2 more answers
3(x+3)+3x=15<br><br> Solution and check<br><br> Shown in attachment below
OLga [1]
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6x + 9 = 15
- 9 = -9
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