anika buys a pair of shin guards for $8.58 and several pairs of soccer socks for $4.29 per pair. if she spends $25.74 before taxes, how many pairs of socks does anika buy?

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

Answer question above and explain each step : )

Afactory adds 3 red drops and 2 blue drops of coloring to white paint to make each pint of purple paint. the factory will make 50 gallons of the purple paint.how many drops of red and blue coloring will the factory need in the 50 gallon batch of purple paint.