What’s 1 plus 1? i am very stumped by this question !

(01.04 lc)multiply 1 over 6 multiplied by negative 1 over 2. negative 1 over 3 negative 1 over 12 1 over 12 1 over 3

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

Use your knowledge of the binary number system to write each binary number as a decimal number. a) 1001 base 2= base 10 b) 1101 base 2 = base 10