Barry asked 40 random students at his school to name their favorite ice cream flavor. of the 40 students he asked, 25 of them preffered chocolate. based on barry's results, how many of the 1,200 students students in the school most likely preffer chocolate ice cream?

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;

Ascientist has 50 grams of a radioactive element. the amount of radioactive element remaining after t days can be determined using the equation (1) after two days the scientist receives a second shipment of 50 grams of the same element. the equation used to represent the amount of shipment 2 remaining after t days is 10) - 50 which of the following is an equivalent form of the expression for the amount remaining in shipment 2? what’s the answer?

I’m confused on how to work the pie charts