The sides of the triangle are 12cm, 17cm, and X cm: a) write an expression to calculate the perimeter

The sides of the triangle are 12cm, 17cm, and X cm: a) write an expression to calculate the perimeter of this triangle; b) what X can be, and what cannot

The perimeter of a triangle is the sum of all its sides. In the first part of our assignment, we must write an expression to calculate the perimeter of our triangle. We compose:

P = a + b + c;

x = 12 + 17 + x;

Next, let’s try to solve our equation:

x = 12 + 17 + x;

x – x = 12 + 17;

0x = 29;

x = 29: 0 – you cannot divide by 0.

In this case, we get the answer to the second part of our assignment:

x can be from minus infinity to -1 and from 1 to plus infinity.

x cannot be 0.