Answer:
x = 
Step-by-step explanation:
Given
6x =
( divide both sides by 6 )
x =
=
×
=
= 
Volume = l x w x h
180 = l (5 x 4)
180 = 20 l
6 = l
That means that the couch will fit, because the length of the van is 6 ft, which is also the length of the couch.
In mathematics, the irrational numbers are all the real numbers which are not rational numbers, the latter being the numbers constructed from ratios (or fractions) of integers.
If you recall soh-cah-toa, tangent is equal to the opposite length divided by the adjacent length so it is true.