3 years ago

Part D

Mathematics

1 answer:

navik [9.2K]3 years ago

3 0

Answer:

at the end of it.....(°^°`)

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so sin (theta)=cos 90 - 58
sin (32)=cos 58

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Answer:

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3 years ago

SOSSSS:<br><br> Find all the values of x between 0 and 4 for which 3 cos(2x - 1) = 2

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0.29 π(52.5°)

Step-by-step explanation: here is the explanation

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3 years ago

The loudness, L, of a sound (measured in decibels, dB) is inversely proportional to the square of the distance, d

Klio2033 [76]

Answer:

L = 9.91 decibels.

Step-by-step explanation:

The loudness, L is inversely proportional to the square of the distance, d, from the source of the sound.

i.e L $\alpha$ $\frac{1}{d^{2} }$

L = $\frac{k}{d^{2} }$

Where k is the constant of proportionality.

When d = 14 feet and L = 85 dB, then;

k = L x $d^{2}$

= 85 x $(14)^{2}$

= 16660

k = 16660

L = $\frac{16660}{d^{2} }$

Thus, when d = 41 feet, then;

L = $\frac{16660}{(41)^{2} }$

= $\frac{16660}{1681}$

= 9.91077

L = 9.91 dB

The loudness is 9.91 decibels.

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3 years ago