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Recent Questions

In **Mathematics** / **College** | 2025-08-20

[Done] The temperature of a mug of hot chocolate in degree Fahrenheit is given by [tex]H(t)=70+100(0.819)^t[/tex] where [tex]t[/tex] is the time, in minutes, after it is prepared. a. Find [tex]H(2)[/tex] and interpret your answer in the context of this problem. b. What is an appropriate domain for this situation? Explain. [tex][0, \infty][/tex] c. What is an appropriate range for this situation? Explain.

In **Physics** / **College** | 2025-08-20

[Done] Taden has found a table of the atmospheric layers of the Sun. However, he can't make out the names of the layers in the chart. [tex] \begin{tabular}{|l|l|l|l|} \hline & \multicolumn{1}{|c|}{ A } & \multicolumn{1}{c|}{ B } & \multicolumn{1}{c|}{ C } \\ \hline Position & Lowest & Middle & Outermost \\ \hline Thickness & 100 km & 2000 km & Millions of kilometers \\ \hline Temperature & 5,500 & 6,000 to 20,000 & $2,000,000$ \\ \hline \end{tabular} [/tex] What are the names of the Sun's layers described in columns A, B, and C? A. Corona; B: Photosphere; C: Chromosphere B. Core; B: Chromosphere; C: Photosphere C. Chromosphere; B: Corona; C: Core D. Photosphere; B: Chromosphere; C: Corona

In **Mathematics** / **High School** | 2025-08-20

[Done] Complete the equivalent equation for $-7 x-60=x^2+10 x$. $(x+\square)(x+\square)=0$ What are the solutions of $-7 x-60=x^2+10 x$ ? $x=\square$

In **Mathematics** / **College** | 2025-08-20

[Done] Using the quadratic formula to solve [tex]$5 x=6 x^2-3$[/tex], what are the values of [tex]$x$[/tex]? A. [tex]$\frac{5 \pm 3 \sqrt{11}}{12}$[/tex] B. [tex]$\frac{5 \pm \sqrt{97}}{12}$[/tex] C. [tex]$\frac{5 \pm \sqrt{47}}{12}$[/tex] D. [tex]$\frac{-5 \pm \sqrt{97}}{12}$[/tex]

In **Mathematics** / **High School** | 2025-08-20

[Done] Evaluate $(-243)^{2 / 5}$

In **Business** / **College** | 2025-08-20

[Done] Formal operational messages are usually written by: A. subordinates to report problems to executives B. executives to guide company policies C. employees for the public D. employees for their coworkers

In **Business** / **College** | 2025-08-20

[Done] Food affects the way we preserve, process, package, and distribute food. A. price B. popularity C. nutrition D. technology

In **Chemistry** / **High School** | 2025-08-20

[Done] Use the table on the right to calculate each required quantity. Remember: [tex]$q=n \Delta H$[/tex] The quantity of heat required to melt 175 g Cu is $\square$ kJ . The substance that releases 21.2 kJ of energy when 1.42 mol of it freezes is $\square$ . | Substance | [tex]$\Delta H_{\text {fus }}$[/tex] ( [tex]$kJ / mol$[/tex] ) | [tex]$\Delta H_{\text {vap }}$[/tex] ( [tex]$kJ / mol$[/tex] ) | | --------- | --------------------------------- | --------------------------------- | | [tex]$H _2 O$[/tex] | 6.01 | 40.7 | | [tex]$CO _2$[/tex] | 7.94 | 25.2 | | [tex]$O _2$[/tex] | 0.443 | 6.81 | | [tex]$N _2$[/tex] | 0.719 | 5.58 | | Fe | 14.9 | 354 | | Al | 10.7 | 255 | | Cu | 13.0 | 304 | | NaCl | 30.2 | 171 | | [tex]$CH _4$[/tex] | 0.936 | 8.53 | | [tex]$H _2 S$[/tex] | 2.37 | 18.7 |

In **History** / **College** | 2025-08-20

[Done] What was true of the first settled communities in Ancient America? A. They developed egalitarian social relations B. They practiced slash and burn agriculture C. It led to increasing pastoralism D. It led to increasing urbanization

In **Mathematics** / **College** | 2025-08-20

[Done] Describe the sequence of transformations that are required to graph [tex]g(x)=3 \sqrt{x+9}-15[/tex] based on [tex]f(x)=\sqrt{x}[/tex].