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Questions in Grade High-school
📝 Answered - For all functions of the form $f(x)=a x^2+b x+c$, which is true when $b=0$? A. The graph will always have zero $x$-intercepts. B. The function will always have a minimum. C. The $y$-intercept will always be the vertex. D. The axis of symmetry will always be positive.
📝 Answered - The vertex of this parabola is at $(-1,-3)$. Which of the following could be the equation?
📝 Answered - Adolph Ochs, the architect of objective journalism, had taken ownership of which newspaper? A. The Washington Post B. The Los Angeles Times C. The Chicago Tribune D. The New York Times
📝 Answered - It is given that [tex]$\sin 50^{\circ}=0.766$[/tex] and [tex]$\cos 124^{\circ}=-0.559$[/tex] when corrected to three decimal places. Without using a calculator, find the value of [tex]$\sin 130^{\circ}+\cos 56^{\circ}$[/tex].
📝 Answered - Scientific knowledge is generally considered to have a positive effect on society. In which situation would scientific knowledge most likely have a negative effect on society? A. if it is used to justify changes in medical practices B. if it results in new governmental regulations on industry C. if it takes years to become widely understood D. if it is misrepresented in order to influence public opinion
📝 Answered - Find the partial derivative of $z=3 x^2 y^3$.
📝 Answered - Where should portable fuel tanks be filled?
📝 Answered - Last to join the Allied Powers? A. Great Britain B. France C. United States D. China
📝 Answered - [tex]\frac{12}{x^7} \times \frac{7}{x^{12}}[/tex]
📝 Answered - Fill in the gaps to balance the equation. Use the smallest set of whole numbers to balance the equation and include coefficients of "1" when appropriate. [tex]$\square$ LiOH + $\square$ ZnCl _2 \rightarrow $\square$ LiCl + $\square$ Zn ( OH )_2[/tex] Complete the table to determine how many atoms of each element are present in the reactants and products. | Element | Reactant | Products | |---|---|---| | Li | $\square$ | $\square$ | | O | $\square$ | $\square$ | | H | $\square$ | $\square$ | | Zn | $\square$ | $\square$ | | Cl | $\square$ | $\square$ |
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