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Questions in Grade High-school

📝 Answered - Choose from the drop-down menus to match the trigonometric expression with its value. [tex]\sin \frac{2 \pi}{5} \cos \frac{\pi}{10}+\cos \frac{2 \pi}{5} \sin \frac{\pi}{10}=[/tex] [tex]\cos 13^{\circ} \cos 47^{\circ}-\sin 13^{\circ} \sin 47^{\circ}=[/tex] [tex]\sin \frac{2 \pi}{5} \cos \frac{8 \pi}{5}+\cos \frac{2 \pi}{5} \sin \frac{8 \pi}{5}=[/tex]

📝 Answered - Which substance is a compound? A. water B. gold C. oxygen D. hydrogen

📝 Answered - $\frac{\cos \left(360^{\circ}-\theta\right) \cdot \tan \left(180^{\circ}-\theta\right)}{\cos \left(180^{\circ}-\theta\right)}$

📝 Answered - A survey asked 60 students if they play an instrument and if they are in band. 1. 35 students play an instrument. 2. 30 students are in band. 3. 30 students are not in band. Which table shows these data correctly entered in a two-way frequency table? A. \begin{tabular}{|l|c|c|c|} \hline & Band & Not in band & Total \\ \hline Play instrument & 30 & 5 & 35 \\ \hline Don't play instrument & 0 & 25 & 25 \\ \hline Total & 30 & 30 & 60 \\ \hline \end{tabular} B. \begin{tabular}{|l|l|l|l|} \hline & Band and play instrument & Not in band and piay instrument & Total \\ \hline Not in band and don't play instrument & 30 & 0 & 30 \\ \hline Band and don't play instrument & 5 & 25 & 30 \\ \hline Total & 35 & 25 & 60 \\ \hline \end{tabular} C. \begin{tabular}{|l|c|c|c|} \hline & Band & \begin{tabular}{c} Don't play \\ instrument \end{tabular} & Total \\ \hline Not in band & 30 & 5 & 35 \\ \hline Play instrument & 0 & 25 & 25 \\ \hline Total & 30 & 30 & 60 \\ \hline \end{tabular} D. \begin{tabular}{|l|c|c|c|} \hline & Band & Not in band & Total \\ \hline Play instrument & 30 & 0 & 30 \\ \hline Don't play instrument & 5 & 25 & 30 \\ \hline Total & 35 & 25 & 60 \\ \hline \end{tabular}

📝 Answered - What type of Fabric switch ports are joined to form an ISL? (A) E_Port to E_Port (B) NL_Port to E_Port (C) F_Port to F_Port (D) N_port to F_Port

📝 Answered - Of the following, ______ is the most closely aligned with employees' perceptions of procedural justice. A) job performance B) absenteeism C) stress D) physical health problems E) mental health

📝 Answered - Exercise 7: Choose the correct word to complete each sentence. 1. You should wait here when / until / while your parents come back. 2. While / After / Before the party, there was a lot of food left. 3. My sister was sleeping when / as soon as / while I was studying for the test last night. 4. As soon as / While / After I left home for school, it rained heavily. 5. The train arrived while / as soon as / before Elle was having lunch. 6. Because / Although / If the water is very cold in January, they go swimming anyway. 7. My father goes jogging every morning before / after / until he gets ready for work. 8. I learned a lot about wildlife until / after / as soon as I visited Cuc Phuong National Park yesterday. 9. I usually drink a glass of warm milk after / until / before I go to bed. 10. Who takes care of the baby when / after / before your mother is away? 11. After / Before / While we receive your confirmation email, we will send you a link to download the program. 12. I have to wait while / before / until my mum comes home. 13. Before / When / While she is ready, we will leave. 14. I'll send you a text message until / as soon as / before I hear from Nam. 15. Before / After / While she goes, she will turn off all the computers. 16. He will send them an email before / until / as soon as he arrives in London. 17. I will give you my reply before / by / this time I leave this afternoon. 18. I'll go online while / as soon as / until I get home. 19. Before / Until / When Mr. Tan phones, please let me know. 20. Let's play with the children after / until / while it is time to go. Exercise 8: Complete each sentence with the correct preposition. 1. Coal power stations release sulfur dioxide ______ the atmosphere. 2. National parks play a key role ______ saving the environment. 3. What type of effect does water pollution have ______ our life? 4. Forests provide a habitat ______ hundreds of species ______ plants and animals. 5. Technology is already playing a key role ______ environmental protection. 6. There is a nice play area ______ the children. 7. The regions are home ______ bears and mountain lions. 8. I'd like to emphasize the importance ______ protecting endangered species. 9. Avoid dumping waste ______ lakes and rivers! 10. Remember to turn ______ devices when you are not using them. 11. Toxic chemicals continue to be dumped ______ the river. 12. Orange juice is rich ______ vitamin C. 13. The pools provide a rich habitat ______ water plants.

📝 Answered - What is the first step when creating a new prompt for AI? Select one answer option below. A) Define the target audience. B) Choose the output format. C) Think about what outcome you want. D) Identify the main topic. E) I don't know this yet.

📝 Answered - 5. Which one of the following can be used as an acid-base indicator for a visually impaired student? a) Litmus b) Turmeric c) Vanilla essence d) Petunia leaves. 6. a) Acids and bases that you encounter in day-to-day life (any 3 from each). b) One strong acid and one weak acid. 7. a) Acid present in car batteries b) An antacid.

📝 Answered - 1) (-x^4y^2 - 3) + (-14x^4y^2 + 9) 2) (a^2 - 17) - (4a^2 + 8) 3) (-17x^2y + 11xy - 2) + (-11xy - 8) 4) (m^2 - 3m - 5) + (m^2 + 10m - 8)