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Questions in Grade Middle-school

[Open]What is the difference between an isotope and an ion?

[Open]8 divided by blank equals 2

[Open]If \( k \) is the midpoint of \( JL \), \( JK = 8x + 11 \) and \( KL = 14x - 1 \), find \( JL \).

[Open]What were the effects as colonists interacted with Native Americans?

[Open]How do you find the sum of \(\frac{12}{13} + \left(-\frac{1}{13}\right)\)?

[Open]450 is 75.2% of what number?

[Open]What are two conditions atoms must have in order to form covalent bonds with one another?

[Open]What is the answer to \(\frac{2}{3} y + 3 = 29\)?

[Open]1. How can the presence of coal-fired electricity plants affect the ability of lakes to support life? 2. Suppose there has been a sudden growth of algae in a lake in cottage country. (a) Suggest three possible causes for this situation. (b) Explain what could happen in the lake.

[Open]15 is 30% of what number?