So you want to solve for x?
It would be nice if this would easily factor:
(-4x + 5)(2x +1) = 0 This will not work!
So you need to use the quadratic formula:
a = -8, b = 4, c = 5

x = (-4 +/-

)/2(-8)
= (-4 +/-

)/-16
= (-4 +

)/-16
= 1/4 -

/4
Answer: Answer to be MAY be 18, I don't know. Just a guess.
Step-by-step explanation
I'll give you a hint. A rectangle, a rhombus, and a square are all types of parallelograms. How many sides do they all have? Should come to you quick, good luck^^
the lateral area and total area of regular pyramid with a square base is 130