E85 fuel is a mixture of 85% ethanol and 15% gasoline by volume. what mass in kilograms of e85 (d = 0.758 g/ml) can be contained in a 14.0-gal tank?

Answer : The mass of E85 fuel is, 40.166 kilogram.

Solution : Given,

Volume of E85 fuel =

Density of E85 fuel = 0.758 g/ml

Formula used :

Now put all the given values in this formula, we get

Therefore, the mass of E85 fuel is, 40.166 kilogram.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.