Basic arithmetics math formulas

TIME AND DISTANCE                      

Speed, Time and Distance: Speed =Distance,Time =Distance,Distance = (Speed x Time).TimeSpeed km/hr to m/sec conversion:
x km/hr =x x5m/sec.18 m/sec to km/hr conversion:

x m/sec =x x18km/hr.5 If the ratio of the speeds of A and B is a : b, then the ratio of the
the times taken by then to cover the same distance is1:1or b : a.ab
Suppose a man covers a certain distance at x km/hr and an equal distance at ykm/hr. Then,

Introduction to Coordinate Geometry

What are coordinates In classical mathematics, analytic geometry, also known as coordinate geometry, or Cartesian geometry, is the study of geometry using a coordinate system and the principles of algebra and analysis. This contrasts with the synthetic approach of Euclidean geometry, which treats certain geometric notions as primitive, and uses deductive reasoning based on axioms and theorems to derive truth. Analytic geometry is widely used in physics and engineering, and is the foundation of most modern fields of geometry, including algebraic, differential, discrete, and computational geometry. Usually the Cartesian coordinate system is applied to manipulate equations for planes, straight lines, and squares, often in two and sometimes in three dimensions. Geometrically, one studies the Euclidean plane (2 dimensions) and Euclidean space (3 dimensions). As taught in school books, analytic geometry can be explained more simply: it is concerned with defining and representing geometrica…