At the sewing store, ava bought a bag of mixed buttons. she purchased 21 buttons. twenty-one of the buttons were large. what percentage of the buttons were large?

the answer would be   dignified - apex

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.