The value of 66 tens is 660, as I stated before. There was no reason for my answer to be deleted, because it was correct.
9x - 5 = 22
9x = 22 + 5
9x = 27
x = 3
For this case we first write the equation of which we will use:
I (db) = 10log (l / l)
We substitute the value of l.
We have then:
l = 10 ^ 8lo
Substituting in the given equation:
I (db) = 10log ((10 ^ 8lo) / lo)
Rewriting:
I (db) = 10 * log (10 ^ 8)
I (db) = 80
Answer:
I (db) = 80
option 4
Answer:
5/2(x-3)
Step-by-step explanation:
g(x) = 2/5 x + 3
y = 2/5x +3
Exchange x and y
x = 2/5y +3
Solve for y
Subtract 3 from each side
x-3 = 2/5y +3-3
x -3 = 2/5y
Multiply each side by 5/2
5/2(x-3) = 5/2(2/5)y
5/2(x-3) = y
The inverse is 5/2(x-3)
