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Questions in Grade Middle-school

[Open]How can rusting be prevented?

[Open]What are the numbers between 67 and 113 that are multiples of 2, 6, and 8?

[Open]Which pair of square numbers make 113?

[Open]How do you solve the equation 6x - 14 = 16?

[Open]Change the equation to show what it would look like if you were solving for \( b \). Show steps, please. [tex]A= \frac{1}{2}h(b+c) [/tex]

[Open]If you forget to dry off a bread knife after washing it, and reddish-brown spots appear on it, would that be a physical or chemical change?

[Open]Alex has $44x. He bought y sets of dishes. Each set costs $32. Write an algebraic expression for the amount of money he has now.

[Open]Are the following physical or chemical changes? 1. Lighting a match 2. Cooking waffles 3. Baking a cake

[Open]In a paper airplane contest, Marcel's plane travels 3.345 meters, Salvador's plane travels 3.35 meters, and Jennifer's plane travels 3.3 meters. Based on the measurements, whose plane traveled the farthest distance? Explain your reasoning using a place value chart.

[Open]Lance earned 4 times as much money mowing lawns in July as he did in June. He earned a total of $140 during June and July. How much money did Lance earn in June?