Answer:
so i think its 
at the bottom: 6 x 7 = 42
sides: 5 x 7 x 2 = 70
triangles : 2 x 1 / 2 x 6 x 4 = 24
42+70+24 equals to 136!! hope u understand ^^
I got X = 6
If you replace x for 6 you should get 216
6^3 = 216
Answer:
Step-by-step explanation:
roots are (2+3i) and (2-3i)
reqd. eq. is (x-2-3i)(x-2+3i)=0
or (x-2)²-(3i)²=0
or x²-4x+9-9i²=0
or x²-4x+9+9=0
or x²-4x+18=0
Answer;
-Calculate the lengths of the diagonals, and show that they are equal.
-Calculate the slopes of every side, and show that adjacent sides are perpendicular.
Explanation;
-A parallelogram is a quadrilateral with 2 pairs of opposite, equal and parallel sides. If the diagonals of a parallelogram are congruent, then it’s a rectangle and also if a parallelogram contains a right angle, then it’s a rectangle.