Answer:
x = 70
Step-by-step explanation:
45+2x-5 = 180
2x = 180 - 40
x = 140/2
x = 70
Answer:
D is correct.
Step-by-step explanation:



x - 2 = 0 or x + 4 = 0
x = 2 or x = -4
So we have (2, -4) and (-4, 8). D is correct.
Answer:
Rhombus
Step-by-step explanation:
The given points are A(−5, 6), B(−1, 8), C(3, 6), D(−1, 4).
We use the distance formula to find the length of AB.



The length of AD is



The length of BC is:



The length of CD is



Since all sides are congruent the quadrilateral could be a rhombus or a square.
Slope of AB
Slope of BC 
Since the slopes of the adjacent sides are not negative reciprocals of each other, the quadrilateral cannot be a square. It is a rhombus
Answer:
44y
Step-by-step explanation:
bcause they are the same you just add them normally but add the y at the end