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
18
Step-by-step explanation:
X-3=15
Make X the subject of the formular by transferring the number with co-efficients in one side if the equation.
X=15+3
X=18
Answer:
23 1/24
Step-by-step explanation:
How i got my answer was that i did the opposite
- 82 2/3 - 59 5/8 = 23 1/24
to find what ? + 59 5/8= 82 2/3 equals to you have to do the opposite of addition which is subtraction and that will help you find the answer/sum of the problem
Answer: 234 inches
Step-by-step explanation:
The billboard is 6 meters long and we are given the conversion factor for centimeters to inches.
To convert the length to inches therefore, convert the length from meters to centimeters first:
1 meter = 100 cm
6 meters would therefore be:
= 6 * 100
= 600 cm
1 cm = 0.39 inches so 600 cm is:
= 600 * 0.39
= 234 inches
The rate of realtionship a would be 2/4 because when you do the point slope formula, you get the slope of 2/4 so 0.6 ends up being 6/10 which is greater than 1/2 (1/2=2/4). 2/3 is greater than 1/2 and 3/4 is greater than 1/2 so it should be all of them except 1/4. Just find at the slope and see what greater than that slope!
