Answer:
150.51 dB
Step-by-step explanation:
Data provided in the question:
decibel level of sound at 161 km distance = 180 dB
d₁ = 161 km
d₂ = 4800 km
I₁ = 180 db
The formula for intensity of sound is given as:
I = 
and the relation between intensity and distance is given as:
I ∝ 
or
Id² = constant
thus,
I₁d₁² = I₂d₂²
or

therefore,
I = 
or
I = 
or
I = 20 × (-1.474)
or
I = -29.49
Therefore,
the decibel level on Rodriguez Island, 4,800 km away
= 180 - 29.49
= 150.51 dB
Answer:
y = 4.13
Step-by-step explanation:
Plux in x = 33 into y = 1/8x.
y = 1/8(33)
y = 4.125
Round to the nearest hundreth.
y = 4.13
Answer:
$42
Step-by-step explanation:
40% of $63 is $25.2
$63 - $25.2 = $37.8
How much your paying without tax 37.8
7% of $63 is $4.41.
$37.8 + $4.41 = $42.21
Rounded 42.21 = 42
Im not 100% sure about the rounding but I hope this helps!
Hey!
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Formula: 
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Steps To Solve:
~Substitute

~Simplify

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Answer:

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Hope This Helped! Good Luck!
3:1, 6:2, 9:3, 12:4, 15:5, and it just keeps going!