Abag is filled with green and blue marbles. there are 97 marbles in the bag. if there are 9 more green marbles than blue marbles, find the number of green marbles and the number of blue marbles in the bag.

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

The reflexive property of congruence lets you say that ∠pqr ≅

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.