Answer:
x = 8
Step-by-step explanation:
30 = x + 22
subtract 22 from both sides
8 = x
Answer:
39 (I answered wrong to make sure you wasnt to young)
Step-by-step explanation:
what grade are you in? (
Answer:
Copper
Step-by-step explanation:
Count the exponents and this tells you the proton amount (atomic number)
and electron count
This is the electron configuration
Hey there! :)
Answer:
-1/5n + 7 = 2
Start by subtracting 7 from both sides:
-1/5n + 7 - (7) = 2 - (7)
-1/5n = -5
Multiply both sides by the reciprocal of -1/5, or -5.
(-5) · (-1/5n) = (-5) · (-5)
n = 25
