Questions in Grade College

Questions in Grade College

[Answered] A student finishes the first half of an exam in [tex]$\frac{2}{3}$[/tex] the time it takes him to finish the second half. If the entire exam takes him an hour, how many minutes does he spend on the first half of the exam? (A) 20 (B) 24 (C) 27

[Answered] If [tex]s(x)=2-x^2[/tex] and [tex]t(x)=3 x[/tex], which value is equivalent to [tex](s \circ t)(-7)[/tex]? A. -439 B. -141 C. 153 D. 443

[Answered] Which exponential function has an initial value of $2$? $f(x)=2\left(3^x\right)$ $f(x)=3\left(2^x\right)$ | x | f ( x ) | | --- | ------- | | -2 | $\frac{1}{8}$ | | -1 | $\frac{1}{4}$ |

[Answered] Dementia-related behaviors can be a form of communication and an expression of a need. True False

[Answered] The equation for the pH of a substance is [tex]$pH = -\log [H^+]$[/tex], where [tex]$H^+$[/tex] is the concentration of hydrogen ions. Which equation models the concentration of hydrogen ions ([tex]$H^+$[/tex]) of a solution whose pH is 7.2? A. [tex]$[H^+] = \log 7.2$[/tex] B. [tex]$[H^+] = -\log 7.2$[/tex] C. [tex]$[H^+] = 10^{-7.2}$[/tex] D. [tex]$[H^+] = 10^{7.2}$[/tex]

[Answered] The fluid-filled chamber of the inner ear is called the A. anvil B. hammer C. cochlea D. temporal lobe

[Answered] If [tex]log_{10} 8 = 0.9031[/tex], find the value of [tex]4 \times log_{10} 16[/tex].

[Answered] Which formula can be used to find velocity if kinetic energy and mass are known? [tex]v=\sqrt{\frac{1}{2}(K E)(m)}[/tex] [tex]v=\sqrt{\frac{2 m}{K E}}[/tex] [tex]v=\sqrt{K E(m)}[/tex] [tex]v=\sqrt{\frac{2 K E}{m}}[/tex]

[Answered] From a process standpoint, can anyone say if you'd rather have large standard deviations or small ones? Why?

[Answered] Use the given conditions to write an equation for the line in point-slope form and slope-intercept form. Passing through $(-5,-5)$ and $(5,7)$ Type the point-slope form of the equation of the line. $\square$ (Use integers or simplified fractions for any numbers in the equation.)