Answer:
90 and 7
Step-by-step explanation:
Answer: Maturation
Step-by-step explanation:Internal validity is a type of validity that establishes a cause and effect relationship,this type of validity tries to eliminate alternative explanation for a Discovery.
One of the threats to internal validity is MATURATION.
MATURATION is the type of threat occuring during experiment to prove a particular Discovery as shown by the question where the police officer shot and killed someone against the intention of the experiment.
The length of the shortest side of the triangle in discuss is; x = 20 in.
<h3>What is the length of the shortest side of the triangle as given in the task content?</h3>
It follows from the task content that the length of the shortest side can be assumed to be; x in.
Therefore, the perimeter of the triangle is as follows;
Perimeter = x +(x+1) + (x+2)
63 = 3x +3
60 = 3x
x = 20 in.
Read more on perimeter of triangles;
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