Answer:


Step-by-step explanation:
It is important to remember that, by definition, the measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.
In this case we can idenfity that the angle
is an exterior angle of the triangle QRT. Then:

Where:

Substituting values and solving for "x", we get:

Then:

The sum of the interior angles of a triangle is 180°, therefore:

Solving for
, we get:

Answer:
(10a-b)/8
Step-by-step explanation:
LCM(4,8) is 8
Rewrite each fraction using common denominator = 8
5a/4 is 10a/8
10a/8 - b/8 = (10a-b)/8
Answer:
Step-by-step explanation:
Ok
Answer:
b=16cm .......................