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Anika [276]
3 years ago
12

a musician increases the wavelength of the sound waves she produces without changing their speed. What must be happening to thei

r frequency of the waves?
Mathematics
1 answer:
Ilya [14]3 years ago
7 0
Longer wavelength means lower frequency (lower pitch)
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To find this you know that the A of a square = s^2

So the length of one side equals s =  \sqrt{16 x^{2} +72x+81}

Since this is a perfect square, it would equal A = (4x+9)^{2}

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