The ratio of D's to A's in the school was 4 to 83. If there were 166 A's in the school this term, how many D's were there?

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?