А The diagram represents the starting position (AB) and the
finishing position (CD) of a ladder as it slips. The ladder is
leaning against a vertical wall.
Given: AC = x, OC = 4AC, BD = 2AC and OB = 5 m.
Forin an equation in x, find x and hence find the length of the
ladder.
0
B
D

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12

pi or 3.14159265359 is an irratinal decimal