Answer:

Step-by-step explanation:
8x+9=0
8x=-9

or

,



, 
7x / 8 = 21
7x = 8*21
x = 24
Answer:
32.40cm²
Step-by-step explanation:
Given the parallelogram ABCD ;
side AB is always Parallel to CD, hence ;
AB = CD = 7.2cm
Perpendicular from C on AB is the height of the parallelogram = 4.5cm
Area of a parallelogram : base * height
Area of a parallelogram = length base * height
Area of a parallelogram = 7.2 cm * 4.5cm
Area of parallelogram = 32.40cm²
Answer:
I think it is 20 8/12
Step-by-step explanation:
i don'y know what to put here