Solve the system of equations.
4х – 3y = 12
3х + 6у = 42

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?

Solve the equation x/4 - 5= -8 -27 -12 -7 12

The area of square garden is 300m squared. how long is the diagonal?