Surface area of 4 triangles and one square

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.