Answer:
She will replace both at the same time in 18 months
Step-by-step explanation:
The first thing you have to do to find when she will change them at the same time, is to try with multiples of both, untill they match.
Hall Closet = every 9 months
Air Filter = every 6 months
1) 9-18-27-36-45
2)6-12-18
We find that in the 18th month he will change both of them.
They will both be replaced the 18th month.
I have no idea what you are trying to say
Answer: it's 1/8
the first one is a.
the second one is d.
the third one is b.
and the fourth one is c.
im sorry- I THINK it might be B tho-
so yeah-
c=102°
b=(360-204)/2 = 78°
