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Recent Questions

In **History** / **High School** | 2025-07-05

[Answered] Last to join the Allied Powers? A. Great Britain B. France C. United States D. China

In **English** / **College** | 2025-07-05

[Answered] What do learners with interpersonal intelligence excel at? A. Solving problems B. Relating to and understanding others C. Self-reflection D. Appreciating nature

In **Mathematics** / **College** | 2025-07-05

[Answered] To test the effect of a physical fitness course on one's physical ability, the number of sit-ups that a person could do in one minute, both before and after the course, was recorded. Ten individuals are randomly selected to participate in the course. The results are displayed in the following table. Using this data, find the $99 \%$ confidence interval for the true difference in the number of sit-ups each person can do before and after the course. Assume that the numbers of sit-ups are normally distributed for the population both before and after completing the course. \begin{tabular}{|c|c|c|c|c|c|c|c|c|c|c|} \hline Sit-ups before & 46 & 53 & 36 & 48 & 40 & 33 & 47 & 37 & 47 & 24 \\ \hline Sit-ups after & 55 & 59 & 40 & 57 & 56 & 49 & 60 & 39 & 56 & 26 \\ \hline \end{tabular} Step 3 of 4: Calculate the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places.

In **Physics** / **College** | 2025-07-05

[Answered] Which of the following is something you should do prior to using electrical equipment? A. Inspect and evaluate the equipment for any defects or damage B. Remove the ground from 3-prong plugs C. Wet the cord to ensure it doesn't overheat

In **Chemistry** / **College** | 2025-07-05

[Answered] Which of these changes is an example of a chemical change? A. sodium making an explosion when added to water B. solid CO₂ turning into gaseous CO₂ C. water droplets forming outside a glass on a hot day D. evaporation of water from a pan

In **Mathematics** / **High School** | 2025-07-05

[Answered] [tex]\frac{12}{x^7} \times \frac{7}{x^{12}}[/tex]

In **Mathematics** / **College** | 2025-07-05

[Answered] At 6 a.m., the temperature was $-8^{\circ} C$. By noon, the temperature had risen $6^{\circ} C$. The temperature at 6 p.m. was $-10^{\circ} C$. Which integer represents the temperature change between noon and 6 p.m.? A. $-24$ B. $-12$ C. $-8$ D. $-4

In **Chemistry** / **High School** | 2025-07-05

[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 | $\square$ | $\square$ |

In **Mathematics** / **High School** | 2025-07-05

[Answered] Marlena solved the equation $2 x+5=-10-x$. Her steps are shown below. $2 x+5=-10-x$ 1. $3 x+5=-10$ 2. $3 x=-15$ 3. $x=-5$ Use the drop-down menus to justify Marlena's work in each step of the process. Step 1: $\square$ Step 2: $\square$ Step 3: $\square$

In **Social Studies** / **College** | 2025-07-05

[Answered] Which of the following illustrates an appropriate design element in the toddler environment? A. Climbing equipment. B. A raised platform from which a child can observe other children in the class. C. Private Spaces. D. Carpeting. E. All of the above F. A and D only