The explorer that was the first to map the Texas coastline

Divide and reduce the answer to lowest terms: \( -\frac{2}{6} \div\left(-\frac{2}{6}\right) \) Quotient \( =\square \)

Si el área de un circulo es \( 1440 \mathrm{~cm}^{2} \) : a. ¿cuál es el área de un sector circular si el ángulo central es de \( 36^{\circ} \) ?

A copper container of mass 0.080 kg and specific heat \( 387 \mathrm{Jkg}^{-1} \mathrm{~K}^{-1} \) contains 0.30 kg of water and 0.040 kg of ice at \( 0^{\circ} \mathrm{C} \). Steam at \( 100^{\circ} \mathrm{C} \) is passed into the water and its temperature stabilizes at \( 20.0^{\circ} \mathrm{C} \). Find the mass of the water left in the container. Assume the system is insulated from its environment. ( 3 marks)

\( simplify.\frac{12}{24}-\frac{6}{24} \)

окажите тождество: \( \frac{\cos ^{3} \alpha-\sin ^{3} \alpha}{1+\sin \alpha \cos \alpha}=\cos \alpha-\sin \alpha \) \( \operatorname{tg}^{2} \alpha-\sin ^{2} \alpha=\operatorname{tg}^{2} \alpha \sin ^{2} \alpha \) \( \frac{\sqrt{3}-2 \sin \alpha}{2 \cos \alpha-1}=\frac{1+2 \cos \alpha}{2 \sin \alpha+\sqrt{3}} \)