I am better at substitution, but you want to get the equations as similar as possible, but are the opposite, so you can cancel it out.
So we start out by finding out what 80% of 500 is by,
500 * .80 = 400
So if 80% is 400 that means that there is still space available for 100 more gallons!
How the heck did we know that?!?
simple 500- 400= 100
So that leaves us knowing that there are 100 gallons left that can be held!! :)
So your answer is 100 gallons!!
I hope that this helped!
Answer:
a triangle
nm wrong answer
Step-by-step explanation:
Answer:
3) 
=> 
=> 
=> 
4) 
Multiplying and dividing by conjugate 
=> 
=> 
=> 
=> 
Comparing it with
, we get
a = 17, b = -12