How do i find what is the surface area of a rectangular solid

Find two rational expressions that have the difference of 2-n/n-4

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.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?