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deontarr6853
29.06.2019 •
Mathematics
Felicia’s mother is four times as old as felicia. in 16 years, her mother will be twice her age. how old is felicia now?
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Ответ:
Felicia is currently 8 years old.
Step-by-step explanation:
F=x FM=4x
4x+16=2x+0
4x=2x-16
4x/2x=2x/2x-16
2x=-16
x= (+-)8
Now double check
8yrs+16yrs=24
32yrs+16yrs=48
24 x 2 =48
Contact me if you have any questions.
Ответ:
16
Step-by-step explanation:
Now:16 x 2 = 32
16 years:32 x 2 =64
64 / 2 = 32
Ответ:
5 students got both a pencil and a notebook
Step-by-step explanation:
What I did was to know which multiplication table I knew better and not do that one. So, I already have 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99
Then I matched it with the 6's.
6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84, 90, 96, 102
(This may not be the official method but I found this method the easiest)
So therefore your answer would be 5 students.