Ageneticist conducts a study to investigate the prevalence of a certain genetic marker in a particular population of the united states (us) adult. during the study the geneticist observed the genetic code of 1,000 randomly selected us adults in the population and finds that 350 of those adults have the genetic marker. according to the results of the study, what is the ratio of observed adults with the genetic marker to observed adults without the genetic marker? a. 7: 13 b. 13: 7 c. 7: 20 d. 13: 20

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step-by-step explanation:

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

jml angle lkj & angle mj = lm