Answer:
5 / 12
Step-by-step explanation:
You must have common denominators in order to add or, in this case, subtract.
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:
a/4b = 0.075
Step-by-step explanation:
a = 30% of b
a = 30/100 × b
a = 0.3b
The value of a/4b is calculated as:
= 0.3b/4b
= 0.075
Answer:
x=y[base side of isosceles triangle]
x²+y²=19²
x=√{19²/2)}
x=13.44
y=13.44
Answer:
d
Step-by-step explanation:
There are only three shapes that can form tessellations: the equilateral triangle, square, and regular hexagon. Any one of these three shapes can be duplicated infinitely to fill a plane with no gaps. Many other types of tessellation are possible under different constraints.