Answer:

Step-by-step explanation:
The perimeter of a polygon is equal to the sum of its sides.
The sides in the triangle shown have lengths
,
, and
in no specific order.
Since its perimeter is given by the sum of its sides, the perimeter is equal to:

Combine like terms:

Answer:
9x + 5y
Step-by-step explanation:
Here, in 2x + 5y+ 7x, the 'like terms' are 2x and 7x, and the sum of these terms is 9x. Thus, 2x + 5y+ 7x becomes 9x + 5y.
Answer:
answer for a,b and c are all zero (0).
reasons for all:
zero(0) divided by any number is zero(0).