(ENEM 2010). Um porta-lápis de madeira foi construido no formato cúbico, seguindo o modelo ilustrado a seguir. O Cubo de dentro é vazio. A Aresta do cubo maior mede 12 cm e a do cubo menor ,que é interno, mede 8 cm

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

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.