It means 9+9+9+9 = 36
4 ft is 4/9 lots of 3 yards.
4
0.913580246913580....................and lots of other numbers
It is 7 lots of 9 = 7*9 = 63.
9 x 9 = 81
4/9 of 9 = 4
99 = 9*9*9*9*9*9*9*9*9 (nine lots of 9) = 387,420,489
The difference between the squares of two consecutive numbers is the sum of those two numbers. For example: 2 squared is 4. 3 squared is 9. 9-4=5 2+3=5 This is for a very simple reason: To go from 2x2 or '2 lots of two' to '3 lots of two' (3x2) we must add another two. 3 lots of two equals 2 lots of three. To get to three lots of two we need another three. We have added two then three, or 2+3. You can also apply this rule two numbers further apart, but to discover their squares' difference you must add them together and multiply by their difference EG. 2 squared is 4 4 squared is 16 16-4= 12 (2+4)x2=12
If you mean 25% of 9 then it is 2.25
(4/9)³ = (4/9) × (4/9) × (4/9)(4/9) × (4/9) = 16/81(16/81) × (4/9) = 64/729
9 - 4 is not the same as 4 - 9 Subtraction is not commutative.