Ametal fabricating company produces 150,000 souvenir tokens each year. in a random sample of 400 tokens, 3 have stamping error. predict the total number of coins that will have stamping errors in a year.

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?