The intensity of a radiation at a distance x meters from a source is modeled by the function R given by R(x) = k/x^2, where k is a positive constant. Which of the following gives the average intensity of radiation between 10 meters and 50 meters from the source?

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Step-by-step explanation:

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

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