Which expression is equivalent to sqrt200

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

Which geometric principle is used to justify the construction below?