x(b+c)+3(b+c) = (x+3)(b+c)
Area of a triangle = 1/2 x base x height
using the given information: area = 40 and base = 20
you now have 40 = 1/2 x 20 x height
divide both sides by 1/2
80 = 20 x height
divide both sides by 20
height = 80 / 20
height = 4 in.
Q1.) A. 12
Q2.) A.

Q3.) C. A probability near 1 indicates a likely event
Q4.) D. 5
The simplified expression of
is
.
Solution:
Given expression is
.
To simplify the given expression.

Using exponent rule: 

Using another exponent rule: 


Using exponent rule: 


Hence the simplified expression of
is
.