There are only nickels dimes and quarters in a bag. total value of coins is 3.75. if there are twice as many dimes as nickles, and 9 less dimes, how many of each coin are there.

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

How to do this , and can some one explain

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.