What are the products of the combustion of a hydrocarbon? carbon and oxygen
carbon dioxide and water
carbon and hydrogen
carbon dioxide and hydrogen

products formed after combustion of a hydro carbons are :

example;

CH4 + 2O2 -》CO2 + 2H20 + heat

idk

explanation:

dasdad

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.