Which of the following is not a question we must answer when communicating our findings to others? were our survey questions unbiased?

what was our opinion of the experiment and results?

what was the focus of our data collection?

did we employ random sampling methods?

why did we choose our method of data collection?

answer:

step-by-step explanation:

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

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

the answer would be c