Answer:
Will no explain too much in details.
The bottom rectangle has sizes 21cm*9cm, so its area is 189cm^2.
The remaining rectangle has sizes 6cm*7cm(16-9=7cm),so its area is 42cm^2.
The area of the object is 231 cm^2.
The perimeter is 21+9+16+6+(16-9)+(21-6) = 74 cm.
B. all you have to do is multiply the top and bottom by 2
4(2d + 5) = 8d + 20
15x + 18y = 3(5x + 6y)
Step-by-step explanation:
6x-4(x+3)
6x-4x-12
2x-12
So, option b is correct.
I hope it helped u
stay safe stay happy
You have to do the grouping first 10• (4+5) so simplify 10 times (9) is 90
