Which system of equations has no solution?
•5x+ 5y = 10 and 2x+ 2y = 4
•3x-by = 4 and - 4x+8y = 7
•6x+2y = 6 and 7x+3y=9
•3x-4y = 16 and 2x+3y = 5

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points