Please explain all three questions

1) Standardization

2). 1:1.25

3) 4cm

Step-by-step explanation:

The manipulation of scale variables to ensure comparability with other scales and enable comparisons to be made.

1:x = 9.6:12

x= 1: 1.25

9.6/12 = AC/5

AC= (5*9.6)/12

AC= 48/12

AC= 4cm

the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

hope this : )