\[\boxed{\mathbf{Стр.\ 13.\ }еуроки - ответы\ на\ пятёрку}\]
\[\boxed{\mathbf{36.}}\]
\[Длина\] | \[7\ см\] | \[3\ см\] | \[8\ см\] | \[6\ см\] | \[8\ см\] | \[11\ см\] | \[7\ см\] |
---|---|---|---|---|---|---|---|
\[Ширина\] | \[3\ см\] | \[2\ см\] | \[2\ см\] | \[4\ см\] | \[5\ см\] | \[10\ см\] | \[5\ см\] |
\[Площадь\] | \[21\ см^{2}\] | \[6\ см^{2}\] | \[16\ см^{2}\] | \[24\ см^{2}\] | \[40\ см^{2}\] | \[110\ см\] | \[35\ см^{2}\] |
\[Периметр\] | \[20\ см\] | \[10\ см\] | \[20\ см\] | \[20\ см\] | \[26\ см\] | \[42\ см\] | \[24\ см\] |
\[\boxed{\mathbf{37.}}\]
\[(54 + 18)\ :9 = 54\ :9 + 18\ :9 =\]
\[= 6 + 2 = 8\]
\[(54 + 18)\ :9 = 72\ :9 = 8\]
\[(27 + 15)\ :3 =\]
\[= 27\ :3 + 15\ :3 = 9 + 5 = 14\]
\[(27 + 15)\ :3 = 42\ :3 = 14\]
\[\boxed{\mathbf{38.}}\]
\[56\ :7 \cdot 9 = 8 \cdot 9 = 72\]
\[49\ :7 \cdot 5 = 7 \cdot 5 = 35\]
\[18 \cdot 3 + 7 \cdot 3 = 54 + 21 = 75\]
\[12 \cdot 7 - 4 \cdot 6 = 84 - 24 = 60\]
\[\boxed{\mathbf{39.}}\]
\[x + 25 = 70\]
\[y + 25 = 76\]
\[y > x.\]
\[y - 10 = 71\]
\[x - 11 = 71\]
\[y < x.\]
\[y - 40 = 55\]
\[x + 40 = 55\]
\[y > x.\]
\[y\ :10 = 2\]
\[10\ :x = 2\]
\[y > x.\]