The formula for measuring sound intensityin decibels D is defined by the equation D = 10 log ( I I 0 ) where I is the intensity of the sound in watts persquare meter and I 0 = 10 − 12 is the lowest level of sound that the average person can hear. How manydecibels are emitted from a rock concert with a sound intensity of 4.7 ⋅ 10 − 1 watts per square meter?
The formula for measuring sound intensityin decibels D is defined by the equation D = 10 log ( I I 0 ) where I is the intensity of the sound in watts persquare meter and I 0 = 10 − 12 is the lowest level of sound that the average person can hear. How manydecibels are emitted from a rock concert with a sound intensity of 4.7 ⋅ 10 − 1 watts per square meter?
The formula for measuring sound intensityin decibels D is defined by the equation
D
=
10
log
(
I
I
0
)
where I is the intensity of the sound in watts persquare meter and
I
0
=
10
−
12
is the lowest level of sound that the average person can hear. How manydecibels are emitted from a rock concert with a sound intensity of
4.7
⋅
10
−
1
watts per square meter?
3. Write a system of linear equations in slope intercept form that has exactly one solution at
the point (3, 4), such that one line has positive slope (but not 1) and the other line has
negative slope (but not "1).
Also write your system of equations with both
equations written in standard form with out
any fractions
8-
7
8
5
4
3
-2-
+
-8-7-6-5-4-3-2-1
1 2
3
-1
2
-
°
4
-5
-
-8
2. Write a system of linear equations in slope-intercept form has exactly one solution at the
point (3, 4), such that both lines have negative slope (but neither one has slope of 1).
Also write your system of equations with
both equations written in standard form
without any fractions.
B
0
5
4
3
-2
1
-8-7-6-5-4-3-2 -1
12
3
-1
2
-3
-5
6
-7
-8
4. Write a system of linear equations in slope-intercept form that has no solution, such that
(3, 4), and (3,8) are solutions to the first equation, and (0, 4) is a solution to the second
equation.
Also write your system of equations with both
equations written in standard form with out any
fractions
B
0
5
4
3
-2
+
-8-7-6-5-4-3-2
-1
|-
1 2 3
-1
2
-3
4
-5
6
-7
University Calculus: Early Transcendentals (4th Edition)
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