Question

plsssssssssssssssssss ex 7 plsssss urgent haiiiiiiii​

Answer 1

Explicație pas cu pas:

în prima zi:

$\dfrac{3}{11} \cdot \dfrac{121}{6} = \dfrac{11}{2} \ km$

a doua zi:

$\dfrac{11}{2} + \dfrac{11}{2} \cdot 20\% = \dfrac{11}{2} + \dfrac{11}{2} \cdot \dfrac{20}{100} = \dfrac{11}{2} + \dfrac{11}{2} \cdot \dfrac{1}{5} = \dfrac{66}{10} = \dfrac{33}{5} \ km$

a treia zi:

$\dfrac{^{5)}121}{6} - \dfrac{^{15)}11}{2} - \dfrac{^{6)} 33}{5} = \dfrac{605 - 165 - 198}{30} = \dfrac{242}{30} = \dfrac{121}{15} \ km$