Question

алгебра 50 срочно очень надо​

Answer 1

$1)\frac{27c^{4} }{5d}:(-18c^{3}d^{2})=-\frac{27c^{4}}{5d}*\frac{1}{18c^{3}d^{2}}=-\frac{3c}{5*2d^{3}}=-\frac{0,3}{d^{3}} \\\\2)\frac{14a^{2}}{9x^{3}} :\frac{7a}{4x^{2}}=\frac{14a^{2}}{9x^{3}}*\frac{4x^{2}}{7a}=\frac{2a*4}{9x}=\frac{8a}{9x} \\\\3)\frac{7x^{2}}{10a^{3}}:\frac{343x^{8}}{15a^{5}}=\frac{7x^{2}}{10a^{3}}*\frac{15a^{5} }{343x^{8}}=\frac{3a^{2}}{2*49x^{6}}=\frac{3a^{2}}{98x^{6}}$

$4)27a^{3}*\frac{a^{2}}{b^{2}}:\frac{18a^{5}}{7b^{2}}=27a^{3}*\frac{a^{2}}{b^{2}}*\frac{7b^{2}}{18a^{5}}=\frac{3a^{5}*7b^{2}}{b^{2}*2a^{5}}=10,5$