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Questions in Grade College

[Jawaban] Which best describes an element? A. a pure substance B. a type of a mixture C. a pure compound D. an impure substance

[Jawaban] What is the radius of a circle given by the equation $x^2+y^2-2 x+8 y-47=0 ?$

[Jawaban] Put in correct order the sequence in which excitation would move through the conducting system of the heart: 1. Purkinje fibers 2. AV bundle 3. AV node 4. SA node 5. bundle branches A. $1,4,3,2,5$. B. $4,3,2,5,1$. C. $4,2,3,5,1$. D. $3,5,4,2,1$. E. $3,2,4,5,1$.

[Jawaban] Which is not a function of synovial fluid? A. Lubricates articulating surfaces B. Serves as shock absorber C. Nourishes osteocytes D. Distributes stress forces across articular surfaces E. Removes wastes

[Jawaban] 70% isopropyl alcohol is used to flush all channels after disinfection and water rinsing as the last step in the reprocessing procedure: a. To kill any remaining bacteria. b. To lubricate internal parts of the endoscope. c. To speed the drying of channel surfaces. d. To neutralize any residual liquid chemical disinfectant.

[Jawaban] In 1761, Haydn won a desirable post with the Esterházys, one of the wealthiest and most powerful families within the Hapsburg Empire. A. True B. False

[Jawaban] Multiply. [tex]$2 v^3 \cdot 2 w^7 v^5 \cdot 4 w$[/tex] Simplify your answer as much as possible.

[Jawaban] Sara and her friends are enjoying a bag of candy-coated chocolates. Just for fun, they remove 80 pieces of candy from the bag to check their color. The outcomes are shown in the table. | Candy Color | Number of Candies | | :-------------- | :---------------- | | brown or orange | 25 | | green or yellow | 28 | | red or blue | 27 | Which statement is true based on the results in the table? A. All of the outcomes are equally likely because their relative frequencies are similar. B. All of the outcomes are equally likely because the relative frequency of picking brown or orange candies is greater than that of picking green or yellow. C. All of the outcomes are not equally likely because there is a lot of variation in their relative frequencies. D. All of the outcomes are not equally likely because the relative frequency of picking green or yellow candies is the highest. E. All of the outcomes are not equally likely because the relative frequency of picking red or blue candies is less than that of picking brown or orange or green or yellow candies.

[Jawaban] Select the correct answer. Julissa is printing out copies for a work training. It takes 4 minutes to print a color copy, and it takes 2 minutes to print a grayscale copy. She needs to print no fewer than 8 copies within 25 minutes. Which system of inequalities represents the number of color copies, [tex]$x$[/tex], and grayscale copies, [tex]$y$[/tex], that Julissa can print to meet her goal? A. [tex]$2 x+4 y \leq 25$[/tex] [tex]$x+y \geq 8$[/tex] B. [tex]$4 x+2 y \geq 25$[/tex] [tex]$x+y \geq 8$[/tex] C. [tex]$4 x+2 y \leq 25$[/tex] [tex]$x+y \leq 8$[/tex] D. [tex]$4 x+2 y \leq 25$[/tex] [tex]$x+y \geq 8$[/tex]

[Jawaban] Which of these is an example of a physical change? A. A banana ripening in the air B. Hydrogen burning in the air C. Zinc reacting with an acid D. Liquid water turning into vapor