X^2 - xy + xy - Y^2
=
X^2 - Y^2
Answer:
<h2> 3600 barrels</h2>
Step-by-step explanation:
Step one
Given data
We are told that the rate of leakage is
60 barrels per minute
time = 1 hours= 60 minute
Required
The quantity of the oil that leaked after time = 1 hour= 60 minutes
Step two:
From
Rate=Quantity/time
Quantity= rate*time
Quantity= 60*60
Quantity= 3600 barrels
Answer:
see explanation
Step-by-step explanation:
let y = f(x) then rearrange making x the subject
y = 2x - 10 ( add 10 to both sides )
y + 10 = 2x ( divide both sides by 2 )
= x
Change y back into terms of x
(x) = 
Answer:81
Step-by-step explanation: it is skip by 3x so 21 x3 = 81
:)
