Answer:
5
Step-by-step explanation:
A square with the same perimeter as a rectangle will have larger area.
However, 42 is not divisible by 4, so we can do 10 by 11.
Length = 11, Width = 10, Area = 110
42 / 4 = 10.5
Length and Width = 10.5, Area = 110.25
2(a+bc)=2a+2bc
3.(ab-cb-ba+bc)= 3ab-3cb-3ba+3bc
Since the brackets and multiplication have a higher order than the rest.
Cb=Bc
Ab=ba
Ac=Ca
Because multiplication is commutative.
2a+2bc + cb +ab + ac -(3ab-3cb-3ba+3bc)
2a + 2bc + cb + ab + ac(+ -3ab - - 3cb - -3ba +-3bc)
2a + 2bc + cb + ab + ac -3ab + 3cb + 3ba -3bc
2a + (2bc-3bc +cb + 3cb ) + (ab -3ab + 3ba) + ac
=2a + 3cb + ba+ ac OR 2a +3bc + ab + ac
The Or is just a different way to write it.
Hope this helps
A point is an exact location.
It has no length, width, or height.
It has no area or volume.
It has no mass, shape, or other physical properties.
As a model ...
-- you could use the period at the end of a sentence printed on paper.
It looks like this ==> ·
-- You could use the point of a very sharp pencil.
-- You could use the tiny dot that the point of
a very sharp pencil makes on paper.
-- You could use the point of a pin.
-- You could use the tiny hole that the point of
a pin makes in a sheet of paper.
These are all bigger than a real point. They all have a little bit of size,
length, width, height, and you can see them. But they get the idea across.
(They 'make the point'.)
