A rectangle is four times as long.
as it is wide. The perimeter of the
rectangle is 100cm . Find the lenght
of the longest side.

I think the answer is 400

Step-by-step explanation:

I'm not sure if I'm correct but I just multiplied 100*4 sorry if im wrong.

the infinity sign

step-by-step explanation:

hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8