Question

raiz quadrada de 9 sobre 100 × a raiz quadrada de 25 sobre 100 + a raiz quadrada de 49 sobre 25

Answer 1

Olá, boa noite!

$\sqrt{\dfrac{9}{100}}\cdot\sqrt{\dfrac{25}{100}}+\sqrt{\dfrac{49}{25}}=\\\\\dfrac{3}{10}\cdot\dfrac{5}{10}+\dfrac{7}{5}=\\\\\dfrac{15}{100}+\dfrac{7}{5}=\\\\\dfrac{15}{100}+\dfrac{140}{100}=\\\\\dfrac{155}{100}=\\\\\boxed{\dfrac{31}{20}}$



Espero ter ajudado.
Bons estudos! :)