Hey guys can i get some help please?? Really behind on work and just simply don't understand. 25 points if you anwser. How many significant figures does each value contain?

5.6803 kg has significant figures.

0.00047 seconds has significant figures.

0.240 miles has significant figures.

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 is he correct? explain why or why not?