5 SAT Math Tutorials

These SAT Math tutorials are written by experienced educators, all of whom also offer private tutoring lessons. Get the SAT Math help you need, whether through these tutorials or through private tutoring lessons.

Pythagorean Theorem

the pythagorean thoerem states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. The theorem can be written as an equation relating the lengths of the sides a, b and c, often called the “Pythagorean equation”: A^2 + B^2…

Air Traffic Control System Based on Low Elevation Orbit (LEO) Satellite Constellation

Air navigation currently is insured by the Secondary Surveillance Radar SSR located on the ground. Satellite systems are a valid alternative system to cover wide areas on the earth and to provide broadband communications to mobile and fixed users. In this paper, a low-Earth orbit satellite constellation is presented. A novel hierarchical and distributed QoS…

Multiplication of Numbers

Have you ever thought multiplication is very difficult for large numbers. Well then, you’re here at the right place then.It’s more of a shortcut of the normal long multiplication process.

Direct Variation vs. Inverse Variation

The SAT often asks questions about direct variation and inverse variation. These questions use wording like “…varies directly with…”, “…varies inversely with…”, “…is directly proportional to…” and “…is inversely proportional to…” The formulas for direct and inverse variation are as follows. Direct Variation As one variable increases, the other variable increases proportionately.

    \[ y=kx \]

SAT Remainder Questions: Divisibility, Factors, and Multiples

The SAT often asks questions about remainders. These questions require you to work with divisibility, factors, and multiples. Here is a typical SAT remainder question.

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