Question

I need help with 10, and 12 please

Answer 1

Qn 10:

x + 2x = 18

3x = 18

x = 6

LM = 6

Qn 12:

Drawing a sketch of the positioning of the points will help greatly.

3x + x =20

4x = 20

x = 5

Substitute x = 5 into AB and BC to find values

AB = 3 x 5 =15

BC = 5