Ramona designed an experiment using the following steps in her investigation: Label Beaker 1: "Water at room temperature". Label Beaker 2 "Water at 100 degrees C". Bring the water in Beaker 2 to a boil. Drop an effervescent tablet into each beaker. Record the amount of time it takes the tablet to completely dissolve. Record observations. Which of the following hypotheses is Ramona most likely testing?

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

The scatterplot below shows the number of hours that students read weekly and the number of hours that they spend on chores weekly. which statement about the scatterplot is true?

The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. what does v(r) represent