What is the answer with the proper significant figures for the following equation?
(7.6 + 8.401) x 4.2 x 0.688 =

the correct choice is a .

do not post any more test or exam questions on

not moving. pos accel,

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.

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over