Answer:
-8+(+12)+)
Step-by-step explanation:
dont know
Answer:
the mean is 4.2
Step-by-step explanation:
Answer:
45:4 or 4:45
Step-by-step explanation:
Depends on which
Answer:
x = ±3
Step-by-step explanation:
x^2 +3 = 12
Subtract 3 from each side
x^2 +3-3 = 12-3
x^2 = 9
Take the square root of each side
sqrt(x^2) =±sqrt(9)
x = ±3
Property of equality
k=k
10/2=5
5=5
