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.
9514 1404 393
Answer:
- A Subtract the bottom equation from the top equation.
- B Add the equations.
Step-by-step explanation:
The x-terms are the same in each equation, so subtracting one equation from the other will eliminate the x-variable.
The y-terms are opposites in the two equations, so adding the two equations will eliminate the y-variable.
Both strategies (subtracting, adding) are applicable to this system of equations.
Answer:
1/18
Step-by-step explanation:
First of all, it works well to consolidate the minus signs:

We can multiply the first fraction by 9/9 and the second one by 2/2 so they have a common denominator.

To answer this we need to perimeter of the room, this is 12 + 12 + 10 + 10 = 44 feet
Answer:
10.85
Step-by-step explanation: