I am attaching the question

r =

Step-by-step explanation:

Multiply both sides by r + 120.

t (r + 120) = 120r

Expand.

tr + 120t = 120r

Subtract tr from both sides.

120t  = 120r - tr

Factor out the common term r.

120t = r (120-t)

Divide both sides by 120 - t.

= r

Finally, switch r to the left side and you get your answer.

//also, sorry for answering late.. my wifi is poopy//

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!

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.