An acute triangle might have interior angles that measure:

less than 90 degrees...

50, 50, 80.

Step-by-step explanation:

An acute triangle is defined as a triangle with no interior angle larger than 90 degrees. Knowing this, and the fact that the interior angles of a triangle add up to 180 degrees, we can assume that 50, 50, and 80 are three angles that could make up an acute triangle.

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: