Answer:
=2.4 cm
Step-by-step explanation:
In similar plane figures, the ratio of corresponding sides is a constant.
This constant is the linear scale factor.
In the provided example, 1.2cm corresponds to 0.96 while 3.0 corresponds to x
Thus, 1.2 cm/0.96 cm=3.0 cm/x
x=(3.0 cm×0.96 cm)/1.2 cm
=2.4 cm.
If you would like to know who paints the largest part of the fence, you can calculate this using the following steps:
three sections of the fence ... 3 sections
four equal sized boards ... 4 boards
3 * 4 = 12 boards
Alex: 1/6 of 12 boards = 1/6 * 12 = 2 boards
Bobby: twice as much as Alex = 2 * 2 boards = 4 boards
Charles: 1 board
David: 12 - 2 - 4 - 1 = 5 boards
Result: The largest part of the fence paints David (5 boards).
Answer:
20
Step-by-step explanation:

I hope this helps you
20-3n=20-3n
-3n+3n=20-20
0=0