Answer:
To find the measure of x you want to put 4x+x equaled to 180, because the measure of a straight line is 180, and 4x and x together make a straight line
Set up your equation:
4x+x=180
Add your like terms
5x=180
Divide by 5 to get x by itself
x=36
Hope this helps ;)
Answer:
Step-by-step explanation:
Step-by-step explanation:
Answer:
Step-by-step explanation:
81
=
3
4
and
27
=
3
3
, so this equation can also be written as
3
4
x
=
3
3
(
x
+
2
)
=
3
3
x
+
6
.
Since the bases are now the same, we can equate exponents to get
4
x
=
3
x
+
6
so that
x
=
6
(technically this equating of exponents requires the fact that exponential functions (with base not equal to 1) are one-to-one functions).
(do u understand?)
