54=.9x Solve for x. x=54/.9=60
X=30 in the first one and x=-15 in the second one
Answer:
1/5^5
Step-by-step explanation:
Flip the equation into a fraction.
:>
Approximately 2945.24 units
Y = t*e^(-t/2)
y' = t' [e^(-t/2)] + t [e^(-t/2)]' = e^(-t/2) + t[e^(-t/2)][-1/2]=
y' = [e^(-t/2)] [1 - t/2] = (1/2)[e^(-t/2)] [2 - t] = - (1/2) [e^-t/2)] [t -2]
