The following are possible ways to express the quantity 0.391
(give all correct answers, i. e., b, ac, ( answer in alphabetical order! )
note: 3.45e-8 is a way you can enter the number 3.45×10-8 in most computers.

Please elaborate more on your question so I can help you

First thing to do change the decmail into a faction 

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.