A system of equations is shown below. Equation 1: 21 - y=-8
Equation 2: 2 + 2y = 6
To begin solving the system of equations, Equation 1 is multiplied by a value of 2 to create Equation 3.
Equation 3: 42 – 2y = -16
Equation 2: 2 + 2y = 6
Which procedure could best be used to eliminate one of the variables?
add Equation 2 to Equation 3
subtract Equation 2 from Equation 3
subtract Equation 3 from Equation 2
multiply Equation 2 by a value of 4

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.

answer: im gonna go with milli

step-by-step explanation:

the answer i believe is 27 units.

step-by-step explanation: