find the area of a triangle with a base length of 4 units and a height of 5 units. 8 square units 9 square units 10 square units 20 square units

10 square units.
Triangle area: base times height divided by 2
(A triangle area is half the area of a rectangle with the same base and height)
4*5/2=10

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,