Im sorry, finals have me stressed and i cant think straight.

Yes, the triangles are similar.

x=7.2

Step-by-step explanation:

Similar triangles are triangles which have the same shape not not the same size. This can be seen when triangles have the same exact angle measures. The triangles in number 4 have the exact same angle measures and are therefore similar. Because they are similar, their sides have a special relationship. They are proportional on each triangle. We can set a proportion to find an unknown length.

A proportion is a ratio between two related quantities. We will write a proportion from one triangle side to the corresponding side on the other.

We can cross multiply and isolate x to solve.

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2