The equation for the area of a triangle is:

Choose the equivalent equation for the height, h, of a triangle in terms of area, A, and base, b.

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

The amount used= 13.04- 1.9 = 11.14