Ajar contains fifteen coins. two coins are picked randomly with replacement. is this independent, or non independent?

4+(2+x) can you me solve this problem

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.