What methods could you use to calculate the x-coordinate of the midpoint of a horizontal segment with the endpoints of (-20, 0) and (20, 0)?
a. divide 2 by 20
b. take the average of the endpoints
c. divide 0 by 20
d. calculate the average of the x-coordinates
e. divide 20 by 2

option B and D

Step-by-step explanation:

we need to calculate the x-coordinate of the midpoint of horizontal line segment

To find midpoint of x coordinate , add the x coordinate of the given points and divide by 2

(-20, 0) and (20, 0)

The x coordinates of end points are -20 and 20

HEre we divide 0 by 2 not 0 by 20

WE take the average of the endpoints

or calculate the average of the x coordinates

the answer is su.k.my? ? co.kc

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.