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Darya [45]
3 years ago
5

1. Make predictions

Mathematics
1 answer:
umka21 [38]3 years ago
4 0

Answer:

1,800

Step-by-step explanation:

Multiply 4,000 by the percentage of teens who prefer to go to an amusement park.

4,000 x (45/100)=1800

or

4,000 x 45%= 1800

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Urgent help please
rosijanka [135]

Let's assume the frequency of sound be f and wave length is w.

Given that, the frequency of sound varies inversely as the wavelength.

So, we can set up an equation as following:

f*w = k Where k= constant of variation.

Other information is, the frequency of a musical note is 276 cycles per second when the wavelength is 1.2m.

So, next step is to plug in f = 276 and w = 1.2 in the above equation to get the value of k.

276 * 1.2 = k

So, k = 331.2

Next step is to plug in k = 331.2 in the above equation. So,

f * w = 331.2

Now we need to find the wave length : w when frequency : f = 600.

Therefore,

600 * w = 331.2

w = \frac{331.2}{600}

So, w = 0.552

Hence, the wave length is 0.552 m.

Hope this helps you!.

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