To fond the area of a trapezoid, add the top and bottom together, divide that by 2, than multiply by the height.
Area = (8+12)/2 = 20/2 = 10
10 x 9 = 90 square centimeters.

Rationalize.

This can be further simplified to the decimal:
-0.43006...
I hope this helps :)
Answer:
20
Step-by-step explanation:
Solution:
24 6
__ × __
30 6
= 4×5
=20
To reflect over the x axis you just multiply the y value by -1 . So your answer is (5,3)