Classify the scenarios based on whether they are observational studies, experiments, or surveys.

Scenario A: Twenty employees of a company are randomly selected and asked if they would like the company to revise the existing dress
code.

Scenario B: Analysts at an energy research institute compare the frequency of power outages caused by snowfall in different states over
the past decade.

Scenario C: To determine and compare the accuracies of pedometer X and pedometer Y, researchers randomly ask consumers to use
one of the two pedometers and then analyze the results.

Scenario D: At a coffee shop, ten customers are randomly selected each day and asked how many times in a week they visit the shop.

Which is observational study ?
Experiment ?
Survey ?

ram ram

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh