<span>Los minerales se consideran gemas si son raros , clara y brillante.
</span>
Answer:
The equation that represent x, the height of the sign is;

Step-by-step explanation:
Given that the area of the triangular yield is A square feet
and it has a base length of 3 feet.
also the height is represented by x;

Recall that the area of a triangle can be written as;

substituting the given;

Therefore, the equation that represent x, the height of the sign is;

Answer:
9
Step-by-step explanation:
To solve this just take b (in this case 6x) divide it by 2 and then square it
which means that c=9
this will factor to (x+3)²