Jim collected salary from each school system in the state. He found that the mean annual teacher salary was distributed. The mean annual teacher salary for all the school systems was 35,000 and the standard deviation was 19,500. School system A has a mean annual teacher salary of 47,500. What percent of the school systems pay a Lower mean annual teacher salary than school A? A:26.1% B:35.9% c:64.1% D:73.9%

2x^2+5x+17

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guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

answer: they are supplementary angles

step-by-step explanation: 161+19=180. supplementary angles equal 180 degrees