Questions in Grade Middle-school

Questions in Grade Middle-school

📝 Answered - Solve the equation: \[ 7 - 3(5t - 10) = 67 \]

📝 Answered - What did the Egyptians call the area that we now call Sudan?

📝 Answered - Why are some examples of a chemical reaction not actually foolproof evidence of a chemical reaction? Provide two examples to support the statement that commonly known signs of chemical reactions are not always foolproof evidence of a chemical reaction.

📝 Answered - Who was the first President of the United States of America?

📝 Answered - Alex built a snowman using three snowballs: one small, one medium, and one large, with diameters in the ratio 2:3:5. Assuming the snowballs are perfectly spherical and stacked vertically with adjacent snowballs sharing a single point of tangency, if the diameter of the medium snowball is 18 inches, what is the maximum height, in feet, of the snowman Alex built using the three snowballs?

📝 Answered - What are the sides of the DNA ladder made of?

📝 Answered - You have designed a picture that is shaped as a square with dimensions of 6 x 6 inches. You want to enlarge it into a poster with dimensions of 13 x 13 inches. The duplication machine has three settings: reduce by 75%, enlarge by 140%, or make copies at 100%. How many multiple enlargements or reductions will you need to make in order to create a poster that has its sides 13 x 13 inches, accurate within five hundredths?

📝 Answered - What is the volume of a sphere when [tex]r = 9 \text{ ft}[/tex]?

📝 Answered - In the peaceful period of the Middle Kingdom, what area of culture thrived?

📝 Answered - At sea level, water boils at 100 degrees Celsius, and methane boils at -161 degrees Celsius. Which of these substances has a stronger force of attraction between its particles? Explain your answer.