Answer: a linear Function (y=x-5)
Step-by-step explanation:
The heat produced by current I is
H = I²R
where
R = resistance.
According to the formula, heat produced is proportional to the square of the current.
When a current of I = 2 amps is applied, the heat produced is
H = 10x³ + 80.
This heat includes heat due to a fixed current of 2 amps, and heat due to a variable current of x amps.
Because the heat produced is proportional to the square of the current, write the expressions as
H = (10x)*(x²) + 20*(2²)
The second term on the right is heat due to the fixed current of 2 amps, written as
20*(2²).
Therefore the fixed resistance is R = 20 ohms, and the square of the fixed current is 2².
The first term represents heat due to variable resistance, written as
(10x)*(x²).
Therefore the variable resistance is 10x, and the square of the variable current is x².
Answer:
The variable current is 10x.
Answer:
$291.50
Step-by-step explanation:
For 22 hours, he earns 22 times his hourly pay.
22×$13.25 = $291.50
Answer:
6
Step-by-step explanation:
Answer:
5 sqrt(6)
Step-by-step explanation:
sqrt(150)
We know that sqrt(ab) = sqrt(a) sqrt(b)
sqrt(25) sqrt(6)
5 sqrt(6)
