Answer:
The element you add is 
Step-by-step explanation:
The element you add is 
Remember that

So, in order to complete the square you add 
But when you multiply times
you get

Answer:
x > 30
Step-by-step explanation:
divide both sides by 9
this gets the x on one side by itself.
270/9 = 30
don't let the inequality mess with you
treat it like an equal sign and leave it the way it is.
move things around it.
Answer:
When we simplify the problem we get 33/8
You put 4-3 over 7
4-3/7 = 1/7
So the answer would be 1/7
Step 1. convert 45% into a decimal value
45% = 0.45
step 2. multiply the decimal value with the main number
0.45 *60
step 3. ???
step 4. Profit