A repairman leans the top of an 19 foot ladder against the top of a stone wall. The base of the ladder is 7.4 feet from the wall. How
tall is the wall? (Use Pythagorean Theorem: a² + b ?= c?)

Any help is needed

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.

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i am not sure :

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15: 24

62.5%

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lol 2

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