Raiz cuadrada de 208,850

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Prove that quadrilateral is a rhombus.

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box