\[\boxed{\text{21.}\text{\ }еуроки - ответы\ на\ пятёрку}\]
Пояснение.
Чтобы перевести десятичную дробь в проценты, нужно дробь умножить на 100 и добавить знак «%».
Решение.
\[0,01:\]
\[0,01 \cdot 100\% = 1\%.\]
\[0,04:\]
\[0,04 \cdot 100\% = 4\%.\]
\[0,23:\]
\[0,23 \cdot 100\% = 23\%.\]
\[1,17:\]
\[1,17 \cdot 100\% = 117\%.\]
\[2,78:\]
\[2,78 \cdot 100\% = 278\%.\]
\[4,5:\]
\[4,5 \cdot 100\% = 450\%.\]
\[0,005:\]
\[0,005 \cdot 100\% = 0,5\%.\]
\[0,9971:\]
\[0,9971 \cdot 100\% = 99,71\%.\]
\[1,369:\]
\[1,369 \cdot 100\% = 136,9\%.\]
\[2,2785:\]
\[2,2785 \cdot 100\% = 227,85\%.\]
\[\frac{1}{2}:\]
\[0,5 \cdot 100\% = 50\%.\]
\[\frac{1}{4} = \frac{25}{100}:\]
\[0,25 \cdot 100\% = 25\%.\]
\[\frac{3}{4} = \frac{75}{100}:\]
\[0,75 \cdot 100\% = 75\%.\]
\[\frac{1}{20} = \frac{5}{100}:\]
\[0,05 \cdot 100\% = 5\%\]
\[\boxed{\text{21\ (21).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
Пояснение.
Решение.
\[y\] | \[- 3\] | \[- 1\] | \[0\] | \[2\] | \[3\] | \[4\] | \[6\] |
---|---|---|---|---|---|---|---|
\[10 - 2y\] | \[16\] | \[12\] | \[10\] | \[6\] | \[4\] | \[2\] | \[- 2\] |
\[10 + 2y\] | \[4\] | \[8\] | \[10\] | \[14\] | \[16\] | \[18\] | \[22\] |
\[10\ - \ 2\ \cdot \ ( - 3) = \ 10\ + \ 6\ = \ \]
\[= 16\]
\[10\ - \ 2\ \cdot \ ( - 1) = \ 10\ + \ 2\ = \ \]
\[= 12\]
\[10\ - \ 2\ \cdot \ 0\ = \ 10\ - \ 0\ = \ 10\]
\[10\ - \ 2\ \cdot \ 2\ = \ 10\ - \ 4\ = \ 6\]
\[10\ - \ 2\ \cdot \ 3\ = \ 10\ - \ 6\ = \ 4\]
\[10\ - \ 2\ \cdot \ 4\ = \ 10\ - \ 8\ = \ 2\]
\[{10\ - \ 2\ \cdot \ 6\ = \ 10\ - \ 12\ = \ - 2 }{\ }{10\ + \ 2\ \cdot \ ( - 3) = \ 10\ - \ 6\ = \ 4}\]
\[10\ + \ 2\ \cdot \ ( - 1) = \ 10\ - \ 2\ = \ 8\]
\[10\ + \ 2\ \cdot \ 0\ = \ 10\ + \ 0\ = \ 10\]
\[10\ + \ 2 \cdot \ 2\ = \ 10\ + \ 4\ = \ 14\]
\[10\ + \ 2\ \cdot \ 3\ = \ 10\ + \ 6\ = \ 16\]
\[10\ + \ 2\ \cdot \ 4\ = \ 10\ + \ 8\ = \ 18\]
\[10\ + \ 2 \cdot \ 6\ = \ 10\ + \ 12\ = \ 22\]