Question

check comments :

Answer 1

jus plug in?

Answer 2

P = 10 log(Pout/Pin)

P = 20
Pout = 12
Pin = ?

Answer 3

plugin the given values in equation, you need to solve for Pin right ?

Answer 4

can you replace P and Pout with their values and write down the new equation?

Answer 5

yes i need to find the Pin.

Answer 6

can you replace P and Pout with their values and write down the new equation?

Answer 7

20 = 10 log(12/x)

Answer 8

the next step is divide both sides by 10

Answer 9

can you do that?

Answer 10

yea i think so.

Answer 11

what do we get?

Answer 12

2= idk LOL

Answer 13

if you had (10*3)/10 you would get 30/10 = 3
or more simply (10*3)/10 = (10/10)*3 = 3
i.e. "cancel the 10's)
so for 10 log(12/x) divided by 10 do the same thing

Answer 14

\[ \frac{10\cdot log(\frac{12}{x})}{10}= ? \]

Answer 15

log(12/x)?

Answer 16

20=10 log 12/x

Answer 17

2=log 12/x
taking anti log
10^2=12/x
100=12/x
x=12/100

Answer 18

0.12?

Answer 19

right

Answer 20

thank you <3