We are given the coordinate of the 3 vertices. From these coordinates we can find the length of the sides using the distance formula and the sum of all the sides will be equal to the perimeter of the triangle.
Side PQ =

Side QR =

Side RP =

So, the perimeter of the triangle will be 8 + 4.5 + 7.2 = 19.7
You probably misplaced the digits in option A. The correct answer is 19.7 units.
36, 43, 50, 57, 64
36 and 64 are two standard deviations out, so the empirical rule tells us 95% of scores will fall here with a normal distribution
Answer: A(-4,3) B(9,3) C(7,0) D(-6,-4)
Step-by-step explanation: add 3 to each x value and subtract 2 from every y value
You can prove they're congruent by SAS Postulate. You see that there are two alternate interior angels and one pair of congruent sides.
Answer:
well, when you are factoring you can always go back an check your work.
Step-by-step explanation: sorry i dont know if this is what you meant