Si se llena con aire un tanque a una presión de 784 torr ¿Cuáles son las presiones parciales de \( \mathrm{N}_{2} \) y \( \mathrm{O}_{2} \) en el tanque, suponiendo que el aire se compone de \( 80 \% \mathrm{~N}_{2} \) y \( 20 \% \) \( \mathrm{O}_{2} \) ? Rta, 630 torr N y 160 torr de \( \mathrm{O}_{2} \)

b. Simplify \( \frac{\sqrt{y^{3}}-2 \sqrt{y}}{\sqrt{y}} \) to its simplest form

18) \( 74 \% \) of the people at a party were drinking punch. If we were to randomly select 3 people at the party, what is the probability that at least 2 of them were drinking punch? Make a tree diagram to support your answer?

7 A typical soccer field measures 110 meters long and 73 meters wide. What is the total area of the soccer field?

\( 1 \leftarrow \) The concession stand at a sports arena sells large 2 -pint sodas. On an average night, five sodas are sold each minute. How many gations of soda are sold per hour?

Identify the GCF of the terms of the polynomial \( 3 x^{4}-6 x^{3}+9 x^{2} \)