*see attached photo* What is step 10 in this proof?

A. Statement Point P lies on line CD

Reason: The coordinates of P satisfy the equation of line C’D’

B. Statement: All three lines share point P.

Reason: Definition of midpoint

C. Statement: Two of the three medians share point P.

Reason: Using point slope formula

D. Statement: line A'E' and line A'E' are concurrent

Reason: Definition of concurrence

E. Statement Point P lies on line A'E' and line A'E.

Reason: Algebra

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?