Answer: 5 units
Step-by-step explanation:
The area of a parallelogram is
. SInce we know the area and the height, we can directly plug the values into this equation and solve for the base.
20=b(4) [divide both sides by 4]
b=5 units
I believe yes, as long as a triangle has 3 sides it is indeed a triangle
He answered 8 questions incorrectly. 2*8=16 100-16=84
ANSWER

EXPLANATION
We want to simplify the expression,

Let us expand the bracket to obtain,

We now group the complex number parts and real number parts.

We simplify further to obtain,

This is in the form,

where

and