salazarx062

12.02.2021 • 

Mathematics

To study the long-term effects of preschool programs for poor children, researchers designed an experiment. They recruited 123 children who had never attended preschool from low-income families in Michigan. Researchers randomly assigned 62 of the children to attend preschool (paid for by the study budget) and the other 61 to serve as a control group who would not go to preschool. One response variable of interest was the need for social services as adults. Over a 10-year period, 38 children in the preschool group and 49 in the control group have needed social services.

Ответ:

destinyd10189

19.12.2021

Mathematics

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The important thing to notice here is that angle FHG is equal to angle JHK due to vertical angles.  That means we have two angles and a side that are equal to each other.

So the two triangles are congruent due to Angle Side Angle.

The answer is C.

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