In quadrilateral abcd, ae equals x +10 be equals 3x -18 for what value of x is abcd rectangle

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8