Melody has 98 stickers. she gives 2/7 of them to her sister and 3/5 of the remainder to her brother. if she wants to increase her collection of stickers to twice what she had oraiginally, how many more stickers must melody buy?

7x+8y=-18, 4x-9y=-3 solve the system of equations

What is the least common factor of 6 and 8

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.