Since we are given that the speed of sound in the air travels about 343 meters per second, we can multiply 343 meters per second by 5, and then we convert the meters to kilometers.

343 · 5 = 1715 meters per 5 seconds.

1000 meters are equal to 1 kilometer. So, we can divide 1715 by 1000 to convert meters to kilometers.

1715 / 1000 = 1.715

Therefore, the speed of sound in air is about 1.715 kilometers per 5 seconds.

6 0

3 years ago

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Mollie drinks a lot of water throughout the day! She drinks 3 and 1/2 liters of water every 2/3 of an hour. How many liters of w

Murrr4er [49]

Answer:a gallon

Step-by-step explanation:if you add cup by cup you can see that it is a gallon by adding them or putting it in a allon jug

6 0

3 years ago

Find the area of a circle circumscribed about an equilateral triangle whose side is 18 inches long

beks73 [17]

let's recall that an equilateral triangle has all interior angles of 60°.

Check the picture below.

so as you can see, 2√3 = x = r, namely the radius of the circle.

$\bf \textit{area of a circle}\\\\ A=\pi r^2\qquad \qquad \implies A=\pi (2\sqrt{3})^2\implies A=\pi (2^2)(\sqrt{3})^2\implies A=12\pi$

7 0

3 years ago

Please answer as soon as possible.

igor_vitrenko [27]

Answer:

i cant see the question

Step-by-step explanation:

5 0

3 years ago