1.

$$ {({1 over25})^{-1 over2}}+{({8 over 27})^{-1 over3}}$$

A. $$ {9 over 2}$$
B. $$ {13 over 2}$$
C. $$ {13 over 15}$$
D. $$ {5 over 9}$$
Answer» C. $$ {13 over 15}$$


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