We use algebra to predict things.
you use it to calculate numbers
We use it to calculate the circumference of a circle.
I mightn't use that word.
It is comparatively easy to use "comparatively" in a sentence.
algol
Algol is in the constellation Perseus.
Algol - film - was created in 1950.
ALGOL W was created in 1966.
Elliott ALGOL was created in 1962.
The Flamsteed designation of Algol is 26 Persei, see f.ex. http://en.wikipedia.org/wiki/Algol.
The duration of Algol - film - is 1.35 hours.
Transmissions from Empire Algol was created in 1995.
Algol is a bright three-star system that is part of the constellation Perseus. Other names for Algol are Demon Star, Gorgona, and El Ghoul.
Caravans to Empire Algol was created in 1994-02.
Algol (El Ghoul or demon) has a radius of 2.3 Solar masses.
Algol is a triple star system.Aldebaran: 4,010KAlgol A: 12,000K