10 because if you use this math technique that my teacher taught me you will know
(x2-y1)²+(2xy)1 =
x⁴-2x²y²+y⁴+4x²y² =
x⁴+2x²y²+y⁴=
(x²+y²)²
2700 (1-4%) 5. population by 2020 would be 2201
$20 total cost
$8 fee
$2 per hour
20 (total) - 8 (initial fee) = 12 (amount spent on hourly use)
12 (amount spent on hourly use) / 2 (cost per hour) = 6 (hours)
20 - 8 = 12
12 / 2 = 6
ANSWER: 6 hours
Answer:
Step-by-step explanation:
The given relation is
To make 
the subject, we square both sides of the equation to get;
Isolate on one side of the equation;
Or
We take the positive square root of both sides to get;
