Find out the correct answer out of the o...

Find out the correct answer out of the options given against each question: If u = 2x, v = - 7y and `r_(uv)= 0.7`, then `r_(xy) =`

A

0.7

B

-0.7

C

0

D

cannot be calculated

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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2019-Exercise

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