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Questions in Grade High-school

[Done] Determine which of the following relations is a function.

[Done] Consider the following reversible reaction. [tex]CO(g)+2 H_2(g) \longleftrightarrow CH_3 OH(g)[/tex] What is the equilibrium constant expression for the given system? A. [tex]Keq =\frac{[ CO ][ H 2]^2}{\left[ CH _3 OH \right]}[/tex] B. [tex]Keq =\frac{\left[ CH _3 OH \right]}{[ CO ][ H 2]^2}[/tex] C. [tex]Keq -\frac{[ CO ][ H 2]}{\left[ CH _3 OH \right]}[/tex] D. [tex]Keq =\frac{\left[ CH _3 OH \right]}{[ CO ][ H 2]}[/tex]

[Done] Tone and mood are similar because:

[Done] If $y$ varies directly as $x$, and $y$ is 20 when $x$ is 4, what is the constant of variation for this relation?

[Done] What is the solution set of the quadratic inequality [tex]x^2-5 \leq 0[/tex]? A. {x | -5 \leq x \leq \sqrt{5}} B. {x | -5 \leq x \leq 5} C. {x | -\sqrt{5} \leq x \leq 5} D. {x | -\sqrt{5} \leq x \leq \sqrt{5}}

[Done] At a game show, there are 6 people (including you and your friend) in the front row. The host randomly chooses 3 people from the front row to be contestants. The order in which they are chosen does not matter. How many ways can you and your friend both be chosen? A. ${ }_6 P_3=120$ B. ${ }_4 C_1=4$ C. ${ }_6 C_3=20$ D. ${ }_6 P_2=30

[Done] Clara simplifies (8b - 4r) - (2b - r) and says the result is 6b - 5r. What error did Clara make? Options: 1. Clara incorrectly combined the b coefficients. The correctly simplified expression is 10b - 5r. 2. Clara incorrectly combined the r coefficients. The correctly simplified expression is 6b - 3r. 3. Clara incorrectly combined the r coefficients. The correctly simplified expression is 6b + 5r. 4. Clara incorrectly combined the b coefficients. The correctly simplified expression (incomplete).

[Done] When this data is plotted on a line graph, what should the axis titles be? | Time (minutes) | Distance (m) Drone 1 | Drone 2 | |---|---|---| | 0 | 0 | 0 | | 1 | 7 | 5 | | 2 | 10 | 9 | | 3 | 12 | 14 | | 4 | 15 | 13 |

[Done] Arrange the following numbers in order: 1756 1765 1770 1806 1793 1822 1819-26 1783, 1789 1791 1791 1792 1788 1860 1863 1859 1859 1860 1917 1765 1810 1783 1789.

[Done] Q2: Find each of the following products. a) 8 × 2h = b) 3h × 4h = c) (-5h) × 6h = d) (-10h) × (-7h) =