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Questions in Grade College

[Free] Add. $\frac{1}{10}+\frac{1}{10}=$

[Free] Wren recorded an outside temperature of $-2^{\circ} F$ at 8 a.m. When she checked the temperature again, it was $4^{\circ} F$ at 12:00 p.m. If $x$ represents the time and $y$ represents the temperature in degrees Fahrenheit, what is the slope of the line through these two data points? A. -1.5 B. -0.5 C. 0.5 D. 1.5

[Free] Which compound contains only a nonpolar covalent molecule? $O _2$ HCl $H _2 O$ $NO _3$

[Free] Solve the equation [tex]$\ln x+\ln (x-3)=\ln (6 x)$[/tex] [tex]x=[/tex]

[Free] Many persons believed, or pretended to believe, and confidently asserted, that freed slaves would not make good soldiers; they would lack courage and could not be subjected to military discipline. Facts have shown how groundless were these apprehensions. The slave has proved his manhood, and his capacity as an infantry soldier, at Milliken's Bend, at the assault upon Port Hudson, and the storming of Fort Wagner. -Edwin M. Stanton, letter to Abraham Lincoln What does this letter suggest about the importance of the Battle of Milliken's Bend? A. It ended the war. B. It was a major Confederate victory. C. It was won with few African American deaths. D. It disproved the belief that formerly enslaved men would not be good soldiers.

[Free] Find $f(-2)$ for the function $f(x)=3 x^2-2 x+7$.

[Free] The function [tex]s = 104 - te^2, 0 \leq I \leq 6.5[/tex] gives the position of an object moving along the s-axis as a function of time [tex]t[/tex]. Graph this together with the velocity function [tex]v(t) = \frac{ds}{dt} = f'(t)[/tex] and the acceleration function [tex]a(t) = \frac{d^2 s}{dt^2} = v'(t)[/tex], then complete parts (a) through (f). (a heavy object fired straight up from Earth's surface at 104 ft/sec) [tex]v(t) = 104 - 32t[/tex] [tex]a(t) = -32[/tex] Choose the correct graph of [tex]s = f(t)[/tex], [tex]v(t)[/tex], and [tex]a(t)[/tex] between. The window for each graph is [0, 6.5] by [-110, 250]. A. B. C. D. a. When is the object momentarily at rest? Select the correct answer below, and if necessary, fill in the answer box(es) to complete your choice. A. The object is at rest when velocity = 0 ft/sec, and this occurs if [tex]t =[/tex] (Type integers or decimals. Use a comma to separate answers as needed.) B. The object is never at rest. b. When does it move down or up? Select the correct answer below, and if necessary, fill in the answer box(es) to complete your choice (Simplify your answer. Type your answer in interval notation. Use integers or decimals for any numbers in the expression) A. The object is moving down for [tex]t[/tex] in the interval but is never moving up. B. The object is moving down for [tex]t[/tex] in the interval and the object is moving up for [tex]t[/tex] in the interval C. The object is never moving down, but is moving up for [tex]t[/tex] in the interval D. The object is never moving down or up.

[Free] $\sqrt{\frac{13}{100}}$

[Free] $\begin{array}{l}\left(\frac{1}{125}\right)^{\frac{2}{3}}=\square \\ 64^{-\frac{2}{3}}=\square\end{array}$

[Free] The focus of a parabola is located at $(0,-2)$. The directrix of the parabola is represented by $y=2$. Which equation represents the parabola? A. $y^2=-2 x$ B. $x^2=-2 y$ C. $y^2=-8 x$ D. $x^2=-8 y$