Help pleasde

12

Step-by-step explanation:

you minus the smaller section from the whole thing so 15-3=12

12

Step-by-step explanation:

Whatever your teacher did is very wrong because we can very clearly see that BC is larger than AB. But the graph shows that AB is larger than BC. But either way. we can just subtract 3 from 15 and get 12. Which means that all that's remaining from the point AC is BC which is 12.

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.

step-by-step explanation:

f(gx)=f(1/x+2)

=(1/x+2)+2

=(1+2x)/2+2

=(1+2x+4)/2

= (2x+5)/2