Abag contains 2 white marbles and 7 purple marbles. two marbles are drawn at random. one marble is drawn and not replaced. then a second marble is drawn.

b)what is the probability of selecting two white marbles?

c) is there a greater chance of selecting two white marbles in a row or two purple marbles in a row? plz show your work

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.

Interpret the following expression (5y^2-7)^3/(2y)^2