Use the circle graph shown below to answer the question. if 30 sixth graders own birds, how many sixth graders were surveyed?

Which of the following is the result of expanding the series

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Asix-sided number cube is rolled twice. what is the probability that the first roll is an even numbe and the second roll is a number greater than 4?