Answer:
Write each answer in centimeters.
Step-by-step explanation:
We cant help you online with measuring, although you can pull out a ruler a measure to the nearest centimeter.
Total length of the board = 30 inch
Length of,
-- First piece = x
-- Second piece = 4x
-- Third piece = 5x
5x + 4x + x = 30
10x = 30
x = 3
Therefore, the lengths of:
-- First piece = 3 inch
-- Second piece = 4*3 = 12 inch
-- Third piece = 5*3 = 15 inch
3xy -6x
just multiply 3x by y and 3x by -2
