1-Completar los espacios con la forma negativa Los siguientes varbos: cpe-ak. play, cal work a) barsketball. b) mydog. c) Sally and Jess._ on sunday. d) They

a) \( \begin{array}{l}x+\text { si } x \leq-2 \\ a x+b \text { si }-2

A clinical test on humans of a new drug is normally done in three phases. Phase I is conducted with a relatively small number of healthy volunteers. For example, a phase I test of a specific drug involved only 5 subjects. Assume that we want to treat 5 healthy humans with this new drug and we have 10 suitable volunteers available. Complete parts (a) through (c) below. a. If the subjects are selected and treated in sequence, so that the trial is discontinued if anyone displays adverse effects, how many different sequential arrangements are possible if 5 people are selected from the 10 that are available? Choose the correct answer below. A. \( 3,628,800 \) C. 120,240 D. 252 b. If 5 subjects are selected from the 10 that are available, and the 5 selected subjects are all treated at the same time, how many different treatment groups are possible? There are 252 different treatment groups possible. c. If 5 subjects are randomly selected and treated at the same time, what is the probability of selecting the 5 youngest subjects? P(selecting the 5 youngest subjects) = \( \square \) (Type an integer or a simplified fraction.)

When seven basketball players are about to have a free-throw competition, they often draw names out of a hat to randomly select the order in which they shoot. What is the probability that they shoot free throws in alphabetical order? Assume each player has a different name. P(shoot free throws in alphabetical order) = (Type an integer or a simplified fraction.)

Solve by the elimination method. Also determine whether the system is consistent or inconsistent and whether the equations are dependent or independent. \( \begin{array}{r}3 x-12 y=15 \\ 2 x-8 y=10\end{array} \) A. There is only one solution. The solution of the system is (Simplify your answer. Type an ordered pair.) B. There are infinitely many solutions of the form ( \( x \). (Simplify your answer.) C. There is no solution.

a) \( \int_{-2}^{0} x^{2} e^{x^{3} / 2} d x \)