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Questions in Grade High-school

[Done] 1. As an ICT student, what is the main effect of computers that can possibly solve the problems of our society right now? 2. Share your ideas on the importance of Occupational Health Safety (OHS) in your real-life situation. What is the impact of this topic on your life?

[Done] Simplify: $\frac{3^{3 x+2}-3^{3 x+1}}{6 \times 27^x}$

[Done] Which of the following does NOT affect the movement of surface currents? A. salinity B. continent location C. Earth's rotation D. wind

[Done] What is the domain of $f(x)=4 \sqrt{2 x-1}+3$? A. $\left(-\infty, \frac{1}{2}\right]$ B. $\left(-\infty,-\frac{1}{2}\right]$ C. $\left[-\frac{1}{2}, \infty\right)$ D. $\left[\frac{1}{2}, \infty\right)$

[Done] A group of students and workers entering a metro station were asked whether they were riding the bus or the subway. The two-way table shows their answers. Types of Transportation | | Bus | Subway | Total | | -------- | --- | ------ | ----- | | Students | 27 | 21 | 48 | | Workers | 42 | 76 | 118 | | Total | 69 | 97 | | How many people were polled? A. 48 B. 69 C. 118 D. 166

[Done] Which points lie on the graph of [tex]f(x)=-\sqrt{-x}[/tex]? | x | y | |---|---| | 3 | -2 | | | | | | | [tex](-9,3)[/tex] [tex](-4,-2)[/tex] [tex](-1,1)[/tex] [tex](0,0)[/tex] [tex](1,1)[/tex] [tex](2,-4)[/tex] [tex](9,3)[/tex]

[Done] $\begin{array}{c} Al \left( NO _3\right)_3( aq ) \text { and } Na _3 PO _4( aq ) \\ Al \left( NO _3\right)_3( aq )+ Na _3 PO _4( aq ) \rightarrow AlPO _4(s) \\ \text { Molecular Equation } \\ Al ^3+( aq )+3 NO _3( aq )+3 Na ^3+( aq )+ PO _4{ }^{3-}( aq ) \\ \text { Complete Ionic Equation } \\ Al ^{3+}( aq )+ PO _4{ }^3 \\ \text { Net Ionic Equation } \\ \text { Spectator Ions }\end{array}$

[Done] Enzo is studying the black bear population at a large national park. He finds that the relationship between the elapsed time [tex]$t$[/tex], in years, since the beginning of the study, and the black bear population [tex]$B(t)$[/tex], in the park is modeled by the following function: [tex]$B(t)=2500 \cdot 2^{0.01 t}$[/tex] According to the model, what will the black bear population be at that national park in 25 years? Round your answer, if necessary, to the nearest whole number.

[Done] If two solids have equal cross-sectional areas at every level parallel to the respective bases, then the two solids have equal volume. The two shared solids both have a height of [tex]$2 r$[/tex] units. At every level, the areas of the cross sections of both solids equal [tex]$\pi(r^2-b^2)$[/tex]. Cross-section area [tex]$=\pi r^2-\pi b^2 =\pi(r^2-b^2)$[/tex] Which of the following can be derived by writing an expression that represents the volume of: A. one cone within the cylinder. B. the two cones within the cylinder. C. the solid between the two cones and the cylinder. D. the cylinder.

[Done] Given the numbers 113.79, 115, 117.79, 37.66, and 86.79, arrange them in ascending and descending order.