Adding to "undo" subtraction and subtracting to "undo" addition are both examples of using inverse operations to solve equations
1 answer:
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Answer:
Option A
Step-by-step explanation:
A hunter travels to his cabinet located at 2 Miles North and 8 Miles West.
Let "d" be the distance traveled before reaching the rocky ground at point say "P". Let the cabin be at "C"
The distance between C and P is given by
Let "t" be the time taken to travel distance CP.
Minimum time will be when "t" is equal to zero
Differentiating the above equation wrt "d", we get -
On squaring both the sides , we get -
"d" cannot be greater than 8 miles.
Hence, the value of "d" is equal to
Option A