1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elina [12.6K]
3 years ago
12

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

urce of the sound. When a person 14 feet from a jetski, it is 70 decibels loud. How loud is the jetski when the person is 46 feet away?
Mathematics
1 answer:
Ivahew [28]3 years ago
5 0

Answer:

Loudness (L) = 6.48 dB

Step-by-step explanation:

Given:

Loudness (L) = k / d² , where k = constant

So,

70 = k / 14²

k = 13,720

New distance = 46 feet

Find:

Loudness (L) = ?

Computation:

Loudness (L) = 13,720 / 46²

Loudness (L) = 13,720 / 2,116

Loudness (L) = 6.48 dB

You might be interested in
I need help please someone please!
Svetach [21]

Answer:it the 3rd one

Step-by-step explanation:

I done this

8 0
3 years ago
Cual es la expasion decimal de 13/7
OverLord2011 [107]

Answer:

1.8571428571428571428571428571429‬

Step-by-step explanation:

Just divided it. The answer will be given exactly. :)

8 0
3 years ago
Simplify -4/5 divided by 3/-2
mixer [17]

Answer:

\frac{8}{15}

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!!!​
marshall27 [118]

Answer:

D

Step-by-step explanation:

I took the quiz :)

4 0
3 years ago
A basketball hoop has a circumference of 144 cm.what is its diameter
levacccp [35]
Formula\ for\ circumference \ of\ circle:\ \ \ 2 \pi r\\\\
144= 2 \pi r\ \ \ \ | divide\ by\ 2 \pi\\\\
r=\frac{72}{\pi}cm\\\\diameter=2radius\\\\
diameter=2r=2*\frac{72}{\pi}=\boxed{\frac{144}{\pi}}
8 0
3 years ago
Other questions:
  • 3(-3-3x)+4= -5 The solution is x= what?
    6·2 answers
  • Anyone knows how to answer any of these 2
    14·1 answer
  • How many miles you can cover in 65 minutes
    15·2 answers
  • Write the polynomials in standard form:<br><br> (15–7xy^2)–(y^3–y^2x–15)
    13·1 answer
  • Many states assess the skills of their students in various grades. One program that is available for this purpose is the Nationa
    9·1 answer
  • Acellus help slope intercept
    9·1 answer
  • If an investment of $8,000 in 1965 had a value of $49,000 in 1990, how many years did it take for the investment to double? (Rou
    12·2 answers
  • Help with the following problems-
    8·1 answer
  • Khan academy, i dont understand the concept
    8·2 answers
  • Hello, I know it is kinda late but here's a question.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!