Question

Тут все на листке, очень

Answer 1

1.
$1) frac{1}{6} times 12 + frac{1}{3} times frac{9}{10} = \ 2 + frac{3}{10} = 2 + 0.3 = 2.3$
$2)2.1 + 1 frac{3}{10} times frac{9}{13} = 3\ frac{13}{10} times frac{9}{13} = frac{9}{10} = 0.9 + 2.1 = 3$
2.
$1)15 times 0.2 = 3 \ 2) sqrt{4 times 7} times sqrt{9 times 7} = \ 2 sqrt{7} times 3 sqrt{7} = 2 times 3 times 7 = 42$
$3) frac{ sqrt{48} }{ sqrt{3} } = sqrt{16} = 4$
$4) sqrt{1.69 - 1.44} = sqrt{0.25 } =0.5$
$3)1) {a}^{2} = 100 - 75 = 25 \ a = 5$
$2) {d}^{2} = 3 div frac{1}{8} = 3 times frac{8}{1} = 24 \ = sqrt{6 times 4} = 2 sqrt{6}$