aidengalvin20
21.10.2020 •
Mathematics
2 Noreen cycled 48 km from Point A to Point B at a constant speed of 36 km/h.
She then cycled back from Point B to Point A at a constant speed of 40 km/h.
Find the total time Noreen took to cycle from Point A to Point B and back again
to Point A
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Ответ:
y=14/5 or 2.8
Step-by-step explanation:
3(-2)+5y=8
-6+5y=8
+6 +6
5y=14
/5y /5y
y=14/5