Area of a square = length²
A = x²
16 = x²; x = 4
dA/dx = 2x cm²/s
dx/dt = 6 cm/s
Using chain rule:
dA/dt = dA/dx * dx/dt
dA/dt = 2x * 6
dA/dt = 12x
At x = 4,
dA/dt = 12(4) = 48 cm²/s
Answer:
tan Z = 3/4
Step-by-step explanation:

O The line increases from the left to right
O The line crosses the x-axis at 2.5
O The line does not enter quadrant II at all...
...Are your answers
Answer: B
Step-by-step explanation: its B
I got 157/990. Just don't ask me how. I just used my fancy TI-84 Calculator.