What is the slope of the line that is perpendicular to the line whose equation is 3x + y = 4?
-3
-1/3
1/3
3

-1/3

Step-by-step explanation:

First step to determine what's the slope of a perpendicular is to know the slope of the line we're referring to.

What's the slope of 3x + y = 4?

The slope is given by the factor of the variable x... so in this case the slope is 3, which is a positive slope, the line is going up.

To have another line crossing that one with a 90 degrees angle, it would have to be with a negative slope.  

The slope angle would also to be inverted... so from 3 would go to 1/3.

In a shortcut, to find a perpendicular slope to m (the original slope), you do -1/m.

So the slope of the perpendicular would be -1/3.

answer: finding the extract measurements and knowing the points

step-by-step explanation:

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.