Dylan wanted to find the average number of hours per day that the students in his class practiced their instruments. he chose three students by drawing their names from a hat. what should he do to ensure that he has an accurate average for the class? a) he should add the three numbers and divide by 3 because that is how one finds an average. b) he should poll more students to eliminate the variability caused by a sample size that is too small. c) he should take the middle number as his average since he has three observations. d) he should just find the average of 0.5 and 4 since 0 does not change anything when adding.

Juliana says that she can use the patterns of equivalent ratios in the multiplication table below to write an infinite number of ratios that are equivalent to 6: 10. which statement explains whether juliana is correct? she is correct because she can multiply 6 and 10 by any number to form an equivalent ratio. she is correct because 6: 10 can be written as 1: 2 and there are an infinite number of ratios for 1: 2. she is not correct because the multiplication table does not include multiples of 10. she is not correct because 6: 10 is equivalent to 3: 5 and there are only 9 ratios in the multiplication table that are equivalent to 3: 5.