1. An exeroplane three from town A (20°N, bo to town 1 (20°N, 20° E ). If the journey takes 6 hours. a. Calculate correct to 3 significat figures, the average speed of the
b. If it then flies due North from town B to town C 420km away. calculate correct to the rearest degree, the latitude of town C. (take radius of the earth=6400km.

what do u need to know

step-by-step explanation:

answer: what are the following choices

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system