Answer:
150
Step-by-step explanation:
90-60 is 30
180-30 is150
I wake up around 7:00
6 kg/m
mass m = 3x^2.
rho ρ= dm/dx =6x
ρ(1) =6 Kg/m
linear density is the derivative of mass (m) with respect to position(x)
that is how fast is the mass changing at that position.
