7 hours
explanation:
30>or equal to 3h+9
subtract non on both sides:
21>or =to 3h
divide by 3:
7>or=to h
Answer:
one solution i think
Step-by-step explanation:
Snkabahakabavaiana a javakavw
False, the range is just determined by minising the lowest from the highest, but the variables can still get you the same mean, which can lead to the same standard deviation
10 15 -5
— - — = —
15 15 15
Hope it’s right!!:)