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Questions in Grade Middle-school

📝 Answered - Vicki puts 10 books on a shelf. The 10 books take up 28 cm. What is the mean (average) thickness of her books? To find the mean thickness, divide the total thickness by the number of books: Mean thickness = Total thickness / Number of books Mean thickness = 28 cm / 10 books = 2.8 cm The mean (average) thickness of her books is 2.8 cm.

📝 Answered - Find the highest common factor (HCF) of 12 and 20.

📝 Answered - Jessica has two sticks. The sticks are the same distance apart at every point. How would you best describe the sticks?

📝 Answered - Round the following to the nearest cent: $16.997

📝 Answered - What are the next four multiples of the fraction [tex]\frac{3}{5}[/tex]?

📝 Answered - There are 5 swimmers in a race. There will be a first-place, a second-place, and a third-place prize awarded. In how many different ways can the 3 prizes be awarded?

📝 Answered - Express in scientific notation: 215,000,000 A. \(2.15 \times 10^8\) B. \(21.5 \times 10^7\) C. \(215 \times 10^6\) D. \(215 \times 1,000,000\) E. \(0.215 \times 10^9\)

📝 Answered - How are symbiotic relationships similar to and different from predator-prey interactions?

📝 Answered - What is the simplest form of [tex]\frac{27}{42}[/tex]? A. [tex]\frac{27}{42}[/tex] B. [tex]1 \frac{15}{27}[/tex] C. [tex]\frac{2}{3}[/tex] D. [tex]\frac{9}{14}[/tex] E. [tex]\frac{13}{21}[/tex]

📝 Answered - How do you write the expression without a fraction bar: \[ \frac{a^7}{a^{10}} \]