How many sides does a regular dodecagon have?

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.