Question

Найдите значение выражения 10√0,49+√0,16

Answer 1

$10 \sqrt{0.49} + \sqrt{0.16} = 10 \sqrt{ \frac{49}{100} } + \sqrt{ \frac{4}{25} } = 10 \times \frac{7}{10} + \frac{2}{5} = 7 + \frac{2}{5} = \frac{37}{5} = 7.4$

Answer 2

10×0.7+0.4 =7.4__________________