The perimeter of a triangle can be found by adding up all the sides
so the perimeter is :
5 + 8 + x =
13 + x <==
Answer:
They are supplementary.
Step-by-step explanation:
If two angles form a linear pair, the angles are supplementary.
Answer:
x>-4
Step-by-step explanation:
flip sign when dealing with negative

Alternatively, you can write radicals as rational exponents, so that you get

Then recalling that

, you have
Answer: a-b=45
Step-by-step explanation: