Which expression is not equivalent to the value of sin(pi/6) -sin(5pi/6)
-sin(7pi/6)
-cos(pi/3)
-cos(5pi/3)

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?