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vallhernandez13
28.08.2019 •
Mathematics
In 4 years, a mother will be 5 times as old as her daughter. at present, the mother is 9 times as old as the daughter. how old are the mother and the daughter today.
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Ответ:
Mother= 9 times as old as the daughter.
4 times 5= 20 mother
9 times 5= 45
Mother=29
daughter=15
Ответ:
B’ = (4, -16)
C’ = (1, -1)