The perimeter of the figure is 31 m what is the length of the missing table

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.

The bottom of a vase is a square.each side measury y+11 units.the square has a perimeter of 55 units what is the value of y?