For one Biology test, Sara had to answer 40 questions. Of these questions, Sara answered 30% of them correctly. How many questions did Sara correctly answer on her test? Round your answer to the nearest whole number if necessary.

Plz heeeeeeelp plz give me the answer

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.