Which axiom would justify the following conclusion? if x + 4 = 12, then x = 8 addition subtraction multiplication reflexive

What are the sotions to the quadratic equation 9x^2=4

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18