Let a and b be sets. prove an b=āub. recall that a stands for the complement of the set a. note: in order to prove equality of sets, you need to prove inclusion in both directions. if you wish, you can illustrate the argument using a venn diagram but a diagram by itself is not sufficient. you are expected to give a logical argument that proves both inclusions.

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

answer is  

a.

93.98 sq. in.

hope you got it chief