answer.
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
Nostrana [21]
2 years ago
15

A Jackhammer from 1 meter away produces roughly 100dB of sound. What is the sound pressure caused by the Jackhammer? Recall that

the loudness of a sound in decibels (dB) is given by the equation L=20log10(ppref) dB. Please help i'm so lost!!!
Mathematics
1 answer:
gregori [183]2 years ago
3 0

Answer:2

Step-by-step explanation:

You might be interested in
Calculate the expected gain or loss for Stock ABC. Lose $25 Gain $5 Gain $45 Stock ABC 40% | 15% | 45% Stock JKL| 15% | 65% | 20
Rainbow [258]

Answer:

$11

Step-by-step explanation:

\left\begin{array}{c|ccc}&$Lose \$25&$Gain \$5&$Gain \$45\\$Stock ABC&40\%&15\%&45\%\end{array}\right

We want to calculate the expected gain or loss of Stock ABC with the probabilities above.

Note that loss is written in negative.

E$xpected Value =$ (-25  \times 40\%)+(5  \times 15\%) + (45  \times  45\%)\\=(-25 \times 0.4)+(5 \times 0.15)+(45 \times 0.45)\\=-10+0.75+20.25\\=\$11

Stock ABC has an expected gain of $11.

8 0
2 years ago
Find m∠ABD and m∠CBD given m∠ABC = 111∘
Y_Kistochka [10]

Answer:

The is the m ∠ABC = m∠DEF the measures of the angles are equal ... Find the measure of the angle and give the reason for knowing it. ... x = __111___ ... m∠ABD = 3x + 20 and m∠BDC = x + 40 ... an equation to solve for x, and then find

AB, CD,. Hope It Helps!

7 0
2 years ago
Use the two-way table to determine the probability of randomly selecting a person who tested positive for the flu, given he or s
Tamiku [17]

Answer:

c

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
This semester, the tuition fee increased to $5,871. If this represents an increase by 14%, what was the original fee?
MissTica
Use a calculator its easy
7 0
2 years ago
Which of the following represents "The product of the abscissa and ordinate is ten"?
Ainat [17]
Hello,
if x represents the abscissa
and y the ordinate then
the product is x*y
Answer A

6 0
2 years ago
Read 2 more answers
Other questions:
  • 7. Write a paragraph proof of theorem 3-8: in a plane, if two lines are perpendicular to the same line, then they are parallel t
    13·1 answer
  • David drives 168 miles a week for work. He fills his gas tank twice a week. Each fill up is for 12 gallons. Assuming he uses all
    10·2 answers
  • The total length of two ribbons is 13 meters. If one ribbion is 7 5/8 meters long what is the length of the other ribbon
    9·2 answers
  • Shakira went bowling with her friends. She paid $3 to rent shoes and then $4.75 for each game of bowling. If she spent a total o
    13·2 answers
  • Ahmad just put some money into a cd that pays 11.3% interest compounded semiannually according to the rule of 72 in approximatel
    10·1 answer
  • A company manufactures 2,000 units of its flagship product in a day. The quality control department takes a random sample of 40
    12·2 answers
  • Use the formula t=ln2/k that gives the time for a population, with a growth rate k, to double, to answer the following question.
    5·1 answer
  • The number of calls coming per minute into a hotel reservation center is Poisson random variable with mean 3.
    9·1 answer
  • Ainsley works for the owners of a bookstore. Her starting salary was 24,500, and she gets a 3% raise each year. Write an equatio
    6·1 answer
  • Which sequences are arithmetic? Select three options.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!