HRS - Ask. Learn. Share Knowledge. Logo

Questions in Grade College

[Done] The role of the Senate in regard to treaties is to A. approve international treaties. B. advise during negotiations. C. have the president of the Senate sign the treaty. D. negotiate the terms and conditions of the treaty.

[Done] Factor $x^4-81$ A) $(x+3) 2(x-3) 2$ B) $\left(x^2+9\right)(x+3)(x-3)$ C) $\left(x^2+3\right)\left(x^2-3\right)$ D) $\left(x^2-9\right)(x+3)(x-3)$

[Done] Simplify. Write your response in $a+b i$ form. $\sqrt{-169} \cdot \sqrt{-4} =$

[Done] Which explains the information needed to calculate speed and velocity? A. Both require the total distance, but velocity also requires time and displacement. B. Both require time, but velocity requires displacement and speed requires distance C. Speed requires displacement, while velocity requires distance. D. Speed does not require time, while velocity does require time.

[Done] Which equation is most likely used to determine the acceleration from a velocity vs. time graph? [tex]a=\frac{t}{\Delta v}[/tex] [tex]m=\frac{v_2-v_1}{x_2-x_1}[/tex] [tex]a=\frac{\Delta v}{m}[/tex] [tex]m=\frac{x_2-x_1}{y_2-y_1}[/tex]

[Done] Since the implementation of the Clean Air Act, the concentrations of all major air pollutants have decreased. Please select the best answer from the choices provided. A. True B. False

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

[Done] Why is Uncle Buscabeatas a central figure?

[Done] Prove the following equation by using the method of this example. $\tanh ^{-1}(x)=\frac{1}{2} \ln \left(\frac{1+x}{1-x}\right) \quad-1 Let $y=\tanh ^{-1}(x)$. Then we have the following. $x=\tanh \left(\frac{1}{2} \ln \left(\frac{1+x}{1-x}\right)\right.$ (1) $=\frac{\sinh (y)}{\cosh (y)}=\frac{\frac{e^y-e^{-y}}{2}}{\frac{\left(e^y+e^{-y}\right)}{2}} \cdot \frac{e^y}{e^y}=\frac{e^{2 y}-1}{e^{2 y}+1}$

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