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Nostrana [21]
3 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]3 years ago
3 0

Answer:2

Step-by-step explanation:

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In the​ after-school club, ​, ​, and knit scarves that are all the same size with​ yellow, white, and blue yarn. ​'s scarf is ​y
Vinvika [58]

Answer:3.6

Step-by-step explanation: your just duh and duh

6 0
3 years ago
The sales tax on a 15,000 car is 540. at this rate what is the tax on a 32,000 car
maria [59]
Note : Since unit of currency is not defined, I'll be using units.

Sales tax on a 15000 units car = 540 units
540 = 15000 × tax% / 100
=> 540 = 15000 × tax% / 100
=> 540/15000 = tax% / 100
=> tax% = (540/15000) × 100
=> tax% = 540/140
=> tax% = 3.6

now,
sales tax on a 32000 units car = 32000 × tax%/100
= 32000 × 3.6/100
= 320 × 3.6
= 1152 units
therefore sales tax on a 32000 units car = 1152 units
4 0
3 years ago
First right=brainliest:)))
Sophie [7]

Answer:

-4,7

Step-by-step explanation:

add both to get y=7

then sub y in 2 to get 8x+42=10

8x=-32

x=-4

3 0
3 years ago
0.86 is 3.06 % of what number (Round to the nearest hundredth.)
polet [3.4K]

Answer:

Let the number be x

3.06% = 0.0306

The above statement is written as

0.0306x = 0.86

Divide both sides by 0.0306

x = 0.86/0.0306

<h2>x = 28.10</h2>

Hope this helps you

4 0
3 years ago
Enter the equation of the line in slope-intercept form.
nordsb [41]

Answer:

y=3x

Step-by-step explanation:

8 0
3 years ago
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