Math question!
, i'm having a hard time showing the math of the problem‍♀️

x = 5

Step-by-step explanation:

fx = x^2  - 2 gx = 5 - x

           + 2         + 2

fx = x^2 = 7x - gx

__                

fx                    fx

2x =7x

__   ___

2         2

x = 5

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)