DI Nel trapezio \( A B C D \) gli angoli \( \hat{A} \) e \( \hat{B} \) adiacenti alla base maggiore misurano rispettivamente \( 68^{\circ} \) e \( 28^{\circ} \) e la diagonale \( A C \) é bisettrice dell'angolo \( \hat{A} \). Calcola l'am- piezza degli angoli di ciascuno dei triangoli in cuil tra- pezio dato risulta diviso dalla diagonale \( A C \). La base minore DC é congruente al lato obliquo \( A D \). Perché?

The measure of one angle is \( 38^{\circ} \) less than the measure of its supplement. Find the measure of each angle.

Problema \# 2: La cápsula que contiene un medicamento tiene la forma de cilindro con 2 semiesferas en los extremos. La longitud total de la cápsula es de 20 mm . y el diámetro del cilindro 8 mm . ¿Cuál el volumen de la cápsula (tome \( \pi=3 \) )?

En diciembre cayeron 26,7 centímetros de nieve. Si 10 cm de nieve es 1 cm de lluvia, icuánta lluvia habría caído si hubiese hecho más calor?

Complete the sentences in these paragraphs describing the challenge of providing safe drinking water in different areas. People can't drink ocean water. However, in very dry areas near the ocean, people purify ocean water. They must use this process to obtain safe drinking water. The main substance that's dissolved in ocean water is salt, and it must be removed. Salt water is classified as a mixture. This kind of mixture can't be separated by The first ocean water purification method requires heating. This method, that water boils at a lower temperature than salt. The second method does not require heating. This method, Some parts of the world have contaminated water that causes diseases. Contaminated water has microorganisms, and forms a

360. Какие из данных выражений тождественно равны одночлену \( 2 x^{2} y \) : \( \begin{array}{lll}\text { а) } \frac{1}{4} x y \cdot 8 x ; & \text { в) }(-x y) \cdot(-2 x) ; & \text { д) }-\frac{1}{3} x^{2} \cdot(-6 y) ; \\ \text { б) }-x y \cdot(-2 x y) ; & \text { г) }-10 x \cdot\left(-\frac{1}{5}\right) ; & \text { е) }-12 x^{2} \cdot \frac{1}{6} y ?\end{array} \)