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The space-time continuum as the basic model of reality

What is the momentum of the body

How to reduce a fraction without a calculator

Right-angled triangle: the concept and properties

Parallel lines and planes

Transversal waves

Biquadratic equation, the solution of biquadratic equations

Solution inequalities

Linear equations with one and two variables, linear inequalities

Overview of problems dealing with the question how to find speed in school courses in mathematics and physics

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