Is (1, 9) a solution to this system of equations?
y = x + 8
y = 5x + 4

yes

Step-by-step explanation:

To determine if (1, 9) is a solution, substitute x = 1 into the right side of the equations and if the result is y = 9 then it is a solution

y = 1 + 8 = 9 ← True

y = 5(1) + 4 = 5 + 4 = 9 ← True

Thus (1, 9) is a solution to the system of equations.

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.

0.038

step-by-step explanation: