If f(x)=1/x and g(x)=x^2-4x. what two numbers are not in the domain of f o g?

The composed fraction means that the input of is the ouput of .

So, the chain is

The domain of is composed by all inputs which are not zero, otherwise we would have a zero denominator.

So, since doesn't accept 0 as an input, and we want to feed it with , we conclude that can't be zero.

So, we have

Since

we have

Since these two points cases to vanish, they can't be accepted as inputs by .

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.