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Questions in Grade College

📝 Answered - In what way is the European Union similar to a single, independent nation? A. It operates its own industries. B. It has territorial borders. C. It has its own bill of rights. D. It trades with other nations.

📝 Answered - Select the correct answer. What is the formula of the compound vanadium(V) oxide? Use the list of polyatomic ions and the periodic table to help you answer. A. $VO _2$ B. $VO _5$ C. $V _5 O _2$ D. $V _2 O _5$ E. $V _2 O _2$

📝 Answered - A circle centered at the origin contains the point $(0,-9)$. Does $(8, \sqrt{17})$ also lie on the circle? Explain.

📝 Answered - Use the compound-interest formula to find the account balance A, where P is principal, r is interest rate, n is number of compounding periods per year, t is time in years, and A is account balance. | P | r | compounded | t | | --------- | ------- | ---------- | - | | $10,327 | 2.8 % | Daily | 4 | The account balance is approximately $ [ ]. (Simplify your answer. Do not round until the final answer. Then round to two decimal places as needed.)

📝 Answered - the volume of the gas when the absolute temperature is 375 K. (1) Boyle's law states that for a given mass of an ideal gas at a constant temperature, its pressure ([tex]$p N / m ^2$[/tex]) is inversely proportional to its volume ([tex]$\left(V m^3\right)$[/tex]). At a certain temperature, [tex]$3 m^3$[/tex] of a gas exerts a pressure of [tex]$10^5 N / m ^2$[/tex]. If the gas expands to [tex]$12 m^3$[/tex], calculate its pressure, giving your answer in standard form.

📝 Answered - Choose the equation that represents the solutions of $0=0.25 x^2-8 x$. A. $x=\frac{8 \pm \sqrt{(-8)^2-(4)(0.25)(0)}}{2(0.25)}$ B. $x=\frac{-8 \pm \sqrt{(-8)^2-(4)(0.25)(0)}}{2(0.25)}$ C. $x=\frac{-0.25 \pm \sqrt{(0.25)^2-(4)(1)(-8)}}{2(1)}$

📝 Answered - Why does Malcolm try to make Macduff believe that he is an evil man? A. To show Macduff that he would not make a good king B. To get Macduff to return home to Scotland C. To ensure that Macduff is trustworthy and loyal to him D. To force Macduff to admit that he killed Duncan

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Let $U=\{a, b, c, d, e, f, 4,5,6,7,8,9\}, X=\{a, b, c, 5,6,7\}$, and $Y=\{b, d, f, 4,6,8\}$. List the members of the set $X^{\prime} \cap Y^{\prime}$, using set braces. $X ^{\prime} \cap Y ^{\prime}=\{ \square \}$ (Use a comma to separate answers as needed.)

📝 Answered - What is a plumb bob used for? A. Checking and measuring elevations over long distances B. Making a straight line for many feet C. Checking a window header to make sure that it is level D. Checking to make sure that a line is perfectly vertical