There are 30 balls in a bag. 6 are red, 14 are blue, 3 are green and the remainder are yellow. Two balls are to be picked out of the bag, without replacement. What is the probability of
picking:

a) 2 reds

b) a red and a yellow ball in any order
2 greens or 2 blues
d)
a red or blue followed by a green

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?