Answer:
1. D
2. D
Step-by-step explanation:
15x^2y^3=3*5*x*x*y*y*y
-20x^3yz=-1*2*2*5*x*x*x*y*z
comon numbers are
5,x,x,y
greatest common factor is 5x^2y
Answer:c
Step-by-step explanation:
c
The perimeter is: 
Step-by-step explanation:
We have to add all the sides to find the perimeter.
Given sides are:

Perimeter is the measurement of outer boundary of a closed geometrical figure.
Let P be the perimeter
Then

Combining like terms

Hence,
The perimeter is: 
Keywords: Perimeter, Parallelogram
Learn more about perimeter at:
#LearnwithBrainly
A vertex is a corner and the corner that both the quadrilateral and pentagon share is at point (-3,-5)