Correct: m,b,c
incorrect: a,n,c
it’s hard to explain
Considering the logarithmic loudness equation, the relative intensity of 120 decibels is of .
<h3>What is the logarithmic loudness equation?</h3>
The equation is:
In which:
- L is the loudness, in decibels.
- R is the relative intensity.
For this problem, we have that L = 120, hence the relative intensity is found as follows:
More can be learned about logarithmic equations at brainly.com/question/28043645
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Mean is 11.5 Median is 10 and Range is 12 and Outlier is 19
<span>x = 18 and the length of each side of the triangle is 29.
This is a matter of reading the descriptions and converting to mathematical notation.
"QRS is an equilateral triangle"
We now know that all three sides of the triangle have the same length.
"If QR is seven less than twice x". So we can write
QR = 2x - 7
"RS is 61 less than 5 times x". So we can write
RS = 5x - 61
"QS is 11 more than x". And we can write
QS = x + 11
And because we already know that they all have the same length, then we can set those equations equal to each other. Let's just pick 2 of them. Will use the length of QR and QS because they look the simplest and then will solve for x.
QR = 2x - 7
RS = 5x - 61
QS = x + 11
2x - 7 = x + 11
x - 7 = 11
x = 18
So we now know that x = 18. Let's check to make sure all three equations have the same value.
QR = 2x - 7 = 2*18 - 7 = 36 - 7 = 29
RS = 5x - 61 = 5*18 - 61 = 90 - 61 = 29
QS = x + 11 = 18 + 11 = 29
And they all are equal, so 18 is the correct value for x.</span>