Answer:
There is 1.7 left
Step-by-step explanation:
2.6 - 0.9 = 1.7
If the smaller number is x, then the larger number has to be 20 - x in order for the arithmetic mean to be 10, as their sum must be 20.
If the geometric mean is 8 the product of the numbers has to be 64 and so the larger number is 64/x
Solving 64/x = 20 - x gives the quadratic x^2 -20x +64 = 0 so x = 4 or 16.
The two numbers are 4 and 16.
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Answer: $7.00
Step-by-step explanation:
each foot is $1, so times 7 is 7 dollars.