The original price of a tablet was \( \$ 550 \). During a sale, Melvin was given a \( 30 \% \) discount for the tablet. How much did he pay for the tablet?

TEST Quale delle seguenti frazioni genera un numero periodico misto: \( \begin{array}{llll}\text { A }-\frac{147}{6} & \frac{66}{18} & \text { C }-\frac{30}{45} & \text { D }-\frac{44}{24}\end{array} \)

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?

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?

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

What is \(\frac { 4} { 20} \) simplified?