4. José le entrega a Olga 8 m de tela y le solicita que le corte la cuarta parte. ¿Cuántos metros de tela debe recortar Patricia? \( \begin{array}{llll}\text { A. } 4 & \text { B. } 3 & \text { C. } 2 & \text { D. } 1\end{array} \)

\( 14 \Theta 17 ( \bmod 6 ) \)

\( 2.1 .2 \sqrt { 50 } + \sqrt { 8 } - \sqrt { 32 } \)

3 A rectangular block has a volume of \( 40 \mathrm{dm}^{3} \). The base area is \( 20 \mathrm{dm}^{2} \). How tall is the rectangle?

Calcola il valore dell'espressione. \( \left(\frac{1}{7}+\frac{2}{3}\right)-\left[\frac{1}{6}+\left(\frac{2}{3}-\frac{2}{4}\right)-\left(\frac{1}{6}+\frac{2}{4}\right)\right]+\frac{2}{7}-\frac{3}{2}+\left(\frac{1}{21}+\frac{3}{2}\right. \)

A store sells 2.75 liters of juice in one bottle and 1.25 liters in another. How many liters of juice do you have altogether?