For this case we have the following equation:
![l(dB) = 10log( \frac{l}{lo} )](https://tex.z-dn.net/?f=l%28dB%29%20%3D%2010log%28%20%5Cfrac%7Bl%7D%7Blo%7D%20%29)
We must replace the following value in the equation:
![l = 10^8lo](https://tex.z-dn.net/?f=l%20%3D%2010%5E8lo)
Substituting we have:
![l(dB) = 10log( \frac{10^8lo}{lo} )](https://tex.z-dn.net/?f=l%28dB%29%20%3D%2010log%28%20%5Cfrac%7B10%5E8lo%7D%7Blo%7D%20%29)
Simplifying the given expression we have:
![l(dB) = 10log(10^8)](https://tex.z-dn.net/?f=l%28dB%29%20%3D%2010log%2810%5E8%29)
Then, using logarithm properties in base 10, we can rewrite the expression:
![l(dB) = 10(8)](https://tex.z-dn.net/?f=l%28dB%29%20%3D%2010%288%29)
Finally, making the product, the result is:
Answer:
option 4
Answer:
I. Circumference of circular flower bed = 31.42 ft.
II. Area of circular flower bed = 78.55 ft²
Step-by-step explanation:
Given the following data;
Diameter = 10 ft
Radius = diameter/2
Radius = 10/2
Radius, r = 5 ft
I. To find the circumference of the circular flower bed;
Circumference of circle = 2πr
Substituting into the formula, we have
Circumference of circular flower bed = 2*3.142*5
Circumference of circular flower bed = 31.42 ft
II. To find the area;
Area of circle = πr²
Substituting into the formula, we have;
Area of circular flower bed = 3.142*5²
Area of circular flower bed = 3.142*25
Area of circular flower bed = 78.55 ft²
Answer:
Rewrite the equation as
3
b
+
4
c
=
a
.
3
b
+
4
c
=
a
Subtract
4
c
from both sides of the equation.
3
b
=
a
−
4
c
Divide each term by
3
and simplify.
Tap for more steps...
b
=
a
3
−
4
c
3
Step-by-step explanation:
Angle of depression = 12.52°
The right angle triangle formed has a height of 200 ft and a base of 900 ft.
The opposite side of the triangle is 200 ft while the adjacent side of the triangle is 900 ft.
Using tangential ratio we can find the angle of depression. Therefore,
Let
x = angle of depression
tan x = opposite/adjacent
opposite = 200 ft
adjacent = 900 ft
tan x = 200/900
tan x = 2/9
x = tan⁻¹ 2/9
x = tan⁻¹ 0.222
x = 12.5166739144
x = 12.52°
To learn more about angle of depression from the given link
brainly.com/question/16772926
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(2-c,y) is the answer for the problem.