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Questions in Grade Middle-school

[Open]How do you use a table or diagram to represent the relationship between two quantities? For example, for each lion, there are 7 giraffes.

[Open]What is [tex]\frac{21}{18}[/tex] simplified to?

[Open]In a class of 30 students, there are 18 girls. What is the ratio of boys to girls in the class? How would I write the equation to solve the problem?

[Open]If a # b = a + 2b for integers a and b, what is the value of 3 # 4?

[Open]David had 1 bug in his insect collection on Monday, 3 bugs on Tuesday, 6 bugs on Wednesday, and 10 bugs on Thursday. If the pattern continues, how many bugs will he have in his collection on Saturday?

[Open]How are matter and substance related?

[Open]Find an equivalent expression for each expression by simplifying: \((3x - 5y) + 7y\)

[Open]Convert the fraction to a decimal. 11 3/16 A. 11.01875 B. 11.0316 C. 11.1875 D. 11.316

[Open]Lena has some eggs. She uses \(\frac{3}{5}\) of the eggs to make waffles and scrambled eggs. She uses \(\frac{2}{3}\) of the eggs she took to make waffles. What fraction of the total number of eggs does Lena use to make waffles?

[Open]What are the advantages and disadvantages of groynes?