Answer:
A.1
Step-by-step explanation:
d=1
1*9=9
Answer:
of, relating to, or according to the methods or principles of geometry
increasing in a geometric progression.
the study of properties of given elements that remain invariant under specified transformations
explanation:
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Answer:
9 hours, 20 minutes
Step-by-step explanation:
When two ferries work together, they transport a day's cargo in 7 hours
The speed proportion or ratio of larger ferry to smaller ferry is given as 3 : 1
The sum of the ratio = 4 (3 + 1)
This means that it will take the smaller ferry = 7 x 4 hours to work alone = 28 hours, since the larger ferry is faster by 3.
Therefore, when larger ferry works alone, it will take it (7 x 4)/3 = 9.33 hours.
9.33 hours = 9 hours, 20 minutes.
