Pls i need help 20 charscter

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

What can each term of the equation be multiplied by to eliminate the fractions before solving? x – + 2x = + x 2 6 10 12

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?