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Questions in Grade Middle-school

[Answered] Explain why you do not have to do any computing to solve \( 15 \times 0 \times (13+7) \).

[Answered] What fraction of 360 degrees is 270 degrees?

[Answered] What is the solution to the equation \(13x + 15 = 11x - 25\)? Also, explain the steps, please.

[Answered] Simplify the complex fraction \(\frac{1/4}{7/10}\).

[Answered] What is the value of \( n \)? \[ 40 = -\frac{5n}{8} \]

[Answered] How will knowing the density of a substance help you determine whether an object made from that material will float in water?

[Answered] What is greater: -5.06 or 5.6?

[Answered] Solve [tex]1.8c = 7.5[/tex] for [tex]c[/tex].

[Answered] Which number is larger: 0.95 or 0.59?

[Answered] Every morning, Sasha exercises for 20 minutes. She exercises for \( k \) minutes every evening. Next week, she will double her exercise time at night. Write an algebraic expression to show how long Sasha will exercise each day next week.