The n-th term is given by

Then we can find the common ratio from the given terms.

The appropriate choice is -1.
Answer:
1
Step-by-step explanation:
it only has one solution to divide
Answer:
one solution
Step-by-step explanation:
A valid proportion would be 3/4=21/28.
You would multiply both the 3 & 4 is 3/4 by 7 to get 21/28.
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Answer with Step-by-step explanation:
The basic water balance dictates that "Amount of water flowing into the basin should be equal to the amount of water flowing out of it".
Mathematically

where
P = precipitation
I = Infiltration losses in the basin
E = Evapotranspiration
Q = is outflow from the basin
Applying the given values we get

Part b)
From the above equation we get

The evaporation in cubic meters per year is
