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Questions in Grade Middle-school

[Solved] What are the smallest blood vessels in a frog?

[Solved] Solve for x in the equation: \[4x + 8 = 7\] I got \(-\frac{1}{4}\) but I'm not sure if you drop the negative when dividing.

[Solved] Tony spent $60.54 and bought 3 packs of notebooks and a calculator. How much does a pack of notebooks cost if a calculator costs $45.87?

[Solved] Why do electrons, rather than protons, make up the flow of charge in a metal wire?

[Solved] Solve the equation for \( t \). \[ 5t - 8 = 3t + 12 \]

[Solved] What is 467% changed to a fraction?

[Solved] At a pet store, the ratio of cats to dogs sold was 10:1. If 60 cats were sold, how many dogs were sold?

[Solved] A hopper jumps straight up to a height of 1.3 m. With what velocity did he leave the floor?

[Solved] What theory states that Earth's lithosphere is made up of large plates that are in constant motion?

[Solved] What would life be like without plate tectonics?