Answer:
3 liters
Step-by-step explanation:
if 1.5 liters is 50% of the original amount, then to find the original amount you must multiply by two, or:
1.5 liters ×2=3 liters
Answer:
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Answer:
I don't know what the unit of measurement is, so I'll say the distance is 21. As for the average speed, its average speed is 8 per second.
Step-by-step explanation:
Let a be the first term and d be the common difference
t5 = 3 = a + 4d
t7 = 7 = a + 6d
a + 6d - a - 4d = 7 - 3
2d = 4
d = 2
Sub d = 2,
3 = a + 4(2)
a = -5
t2 = a + d
t2 = -5 + 2
t2 = -3