Why is no work done in the following cases? A. A wall holding up a roof
B. A frictionless object moving at a constant velocity

Answerfrom left to right, (largest to smallest); buffy,aiko,chandra,freja, and evita

Answerit causes heavy precipitation for a short period of time

When calculating percentage we need two numbers. one number represents total amount of certain thing and another number represents partial number of that thing. then we divide those two numbers.in this problem total amount represents total number of weeds growing on some surface. partial number represents chicory.percentage = partial / total * 100%percentage = 29 / 98 * 100%percentage = 29.6%our calculation is closest to answer b) so this is our correct answer.