Acray scientific computer can do a simple addition in 130x10^-12 seconds (130 picoseconds).how many additions can the cray computer do in 1 minute?

give the answer in engineering notation, cant seem to understand.

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap