In the figure, side AB is given by the expression 1 + 3, and side BC is 21 – 4. The simplified expression for the area of rectangle ABCD is

Step-by-step explanation:

Length of the rectangle given in the picture =

Width of the rectangle =

Area of the rectangle = Length × Width

                                    =

                                    =

                                    =

                                    =

Therefore, area of the given rectangle is .

x+y=90

x=30-y=x

step-by-step explanation:

if you understand you will get the answer

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3