Set up the composite result function.
f
(
g
(
x
)
)
Evaluate
f
(
g
(
x
)
)
by substituting in the value of
g
into
f
.
4
(
x
−
2
)
Apply the distributive property.
f
(
x
−
2
)
=
4
x
+
4
⋅
−
2
Multiply
4
by
−
2
.
f
(
x
−
2
)
=
4
x -8
Step-by-step explanation:
4.5/2.5 = y/12
y = 12 * 4.5/2.5
y = 21.6
Step-by-step explanation:
Let the angle near point A be
.
Let the angle near point B be
.
Let the angle near point C be
.
Let the external angle near point A be
.
Let the external angle near point B be
.
Let the external angle near point C be
.
According to exterior angle property,exterior angle of an angle is the sum of other two angles.
So,

According to angle sum property,the sum of angles in the triangle add to 
