10. The product of the sum of 4 and 5, and the difference of 20 and 12 are divisible of what number? A. 2 C. 10
B. 5 D. 11

a.2

Step-by-step explanation:

72=(9x8)

72 / 2 = 36

i dont get the question

step-by-step explanation:

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: