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Questions in Grade College

[Jawaban] Which plot is the best example of a tragedy? A. The chief of police loses his job and the respect of his family after his lies and criminal connections are exposed. B. A little girl is lost on the streets of New York City, and her parents work to find her as quickly as possible. C. A couple struggles to stay together as their families and careers manage to keep them apart. D. An old man tells his grandson the heartbreaking story of his experiences as a soldier in World War II.

[Jawaban] Listen. How else can the ratio [tex]$4 / 5$[/tex] be written? A) [tex]$4: 5$[/tex] B) .2 C) [tex]$5 / 4$[/tex] D) [tex]$5: 4$[/tex]

[Jawaban] An experiment is conducted for which the sample space is [tex]S=\left\{s_1, s_2, s_3, s_4, s_5\right\}[/tex]. Is the following probability assignment possible for this experiment? [tex] \begin{tabular}{l|ccccc} Outcomes & $s_1$ & $s_2$ & $s_3$ & $s_4$ & $s_5$ \\ \hline Probabilities & 0.21 & 0.06 & 0.29 & 0.25 & 0.19 \end{tabular} [/tex] Is the probability assignment possible for this experiment? A. No, because not all of the probabilities are between 0 and 1, inclusive. B. Yes, because both rules for an acceptable probability assignment are satisfied. C. No, because the sum of the probabilities of all possible outcomes is not 1. D. No, because none of the rules for an acceptable probability assignment are satisfied. E. No, because the probabilities are given as decimals instead of fractions.

[Jawaban] A balloon containing helium gas expands from 230 mL to 860 mL as more helium is added. What was the initial quantity of helium present if the expanded balloon contains $3.8 \times 10^{-4} mol$, assuming constant temperature and pressure? Use the formula: $\frac{V_1}{n_1}=\frac{V_2}{n_2}$ A. $1.0 \times 10^{-4} mol^6$ B. $1.5 \times 10^{-4} mol$ C. $1.0 \times 10^{-3} mol$ D. $1.4 \times 10^{-3} mol$

[Jawaban] In an experiment, an animal was provided multiple strings, one of which would provide food when pulled. The animal pulled the strings until the food was obtained. What does this say about animal problem solving? A. The animal had no memory of previous attempts B. The animal was unable to understand the task C. The animal learned from previous experience D. The animal had a moment of realization and solved the problem quickly

[Jawaban] Factor $9 x^2+12 x+4$ A. $(-3 x+2)^2$ B. $(3 x-2)^2$ C. $(3 x+2)(-3 x-2)$ D. $(3 x+2)^2$

[Jawaban] Solve the system of equations using the Gauss-Jordan method: [tex] \begin{array}{l} -x+y+z-w=4 \\ 3 x-2 y+2 z-3 w=-14 \\ 2 x+y-z+w=9 \\ 4 x+2 z-3 w=-9 \\ {\left[\begin{array}{cccc|c} -1 & 1 & 1 & 1 & 4 \\ 3 & -2 & 2 & -3 & -14 \\ 2 & 1 & -1 & 1 & 9 \\ 4 & 0 & 2 & -3 & -9 \end{array}\right]} \end{array} [/tex]

[Jawaban] Solve for $y$. $ \begin{array}{l} y+5 x=10 \\ y=[?] x+ \end{array}$

[Jawaban] In the United States, at what age are citizens allowed to vote? A. 16 B. 18 C. 21 D. 25

[Jawaban] If you want to buy insurance for hospital stays and surgeries for serious illnesses, which health insurance is best for you? A. long–term–care insurance B. major medical coverage C. medical benefits