Tiny college wants to keep track of the history of all its administrative appointments, including dates of appointment and dates of termination. (hint: time-variant data is at work.) the tiny college chancellor may want to know how many deans worked in the college of business between january 1, 1960, and january 1, 2018, or who the dean of the college of education was in 1990. given that information, create the complete erd that contains all primary keys, foreign keys, and main attributes.

a

explanation:

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.