Sandra fue a la tienda a comprar unos objetos, compró: 3 balones de diferentes tipos pero estaban en descuento de 20% cada uno, 2 MP3 de 25% de descuento cada una, y 3 playeras del 10% de descuento cada una ¿Cuánto pagará Sandra?

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?