Pls help!!
You are building a rectangular brick patio surrounded by crushed stone in a rectangular courtyard as shown. The crushed stone border has a uniform width of x ft. You have enough money in your budget to purchase patio bricks to cover 140 sq ft. Write and solve an equation by completing the square to determine the width of the border.
Pls show your work!

side side side

side angle angle

angle side angle

side angle side

step-by-step explanation:

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.

no i do not : ( what is it?

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.