You are in charge of decorating your gym for a home coming dance. you bought 6 bags of balloons and 5 bags of sparkling balloons for 19.20$. but you realize this is not enough. than you buy 8 bags of balloons and 2 bags of sparkling stars for 15.80$. what was the price for each item.

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.