What is the subset of the real number to which this number belongs...square root 13

The triangles are similar. what is the value of x? show your work.

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.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.