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3 years ago

Hy was the basin system of irrigation largely abandoned by farmers near the Nile River in modern times?

Geography

2 answers:

Murrr4er [49]3 years ago

7 0

The basin system only allows the planting of one main crop.

malfutka [58]3 years ago

4 0

Because it only support the planting of one main crop, meanwhile perennial system allow the planting of multiple crops

The basin system can only supported one type of crops because it really depended on nile river's annual flooding, which make it far Less effective than the Perennial system. So many people in modern times started to switch to Perennial system

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Complete question:

The average of two number is 55. If 2 is subtracted from the greater number, the ratio between the numbers become 1:2 . The smaller number is

Answer:

The smaller number is 36

Explanation:

let the smaller number = x

let the greater number = y

$\frac{x + y}{2} = 55\\\\$

x + y = 110

y = 110 - x --------- equation (i)

$\frac{x}{y-2} = \frac{1}{2}\\\\ y-2 = 2x\\\\y = 2x + 2 ------equation(ii)$

Substitute y in equation (ii)

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