Read the following situation: There are 13 animals in the barn. Some are chickens and some are pigs. There are 40 legs in all. How many of each animal are there?

When setting up the system, what could the variables represent? Select all that apply.

A. Total number of chicken legs

B. Total number of pigs

C. How long until the number of pigs and chickens are equal.

D. How many animals in the barn

E. Total number of pig legs

F. Total number of chickens

G. Where the lines cross

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Step-by-step explanation:

answer: approximately 206 bones

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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.