Triangle A has sides 7, 12, and 18. Triangle B has sides 5, 9, and 5. Triangle C has sides 8, 8, and 8. What kind is each triangle? * 1. A: Scalene, B: Equilateral, C: Isosceles
2. A: Scalene, B: Isosceles, C: Equilateral
3. A: Isosceles, B: Scalene, C: Equilateral
4. A: Isosceles, B: Equilateral, C: Scalene

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?

Use sigma notation to represent the following series for 9 terms.

What is the slope of the line that has an equation of y equals x -3