Determina cuáles de las siguientes expresiones son ecuaciones y cuales no, Justifica tu respuesta.

a. 40 + x = 15

b. 27 + 40 + 16 = 83

C. P. -89 = 46

d d. {[3 + 2 + (9-7) 4 (3+ 4)}}

e. m + 25 + 32 91

f. 32 +251 - 361-55

8. y - 3

the expected value of the random variable : 0, 1 and 2

step-by-step explanation:

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)