Slope = (8 -2) / (1 + 5) =6/6 = 1
Parallel lines, slope is the same
So the slope of any line parallel to the line containing (-5,2) & (1,8) is also equal 1
Answer: 
Step-by-step explanation:
Given
The perimeter of one equilateral triangle is P
The lengths of the equilateral triangle are equal
Suppose x is the length of each side

i.e.

Answer:
12y-8
Step-by-step explanation:
If you distribute the 2 you will 12y-8
(A) Either of
• rotation 180° about point B
• reflection across point B
(B) If the transformation is rigid, the corresponding sides and angles are congruent.
(C) The sequence of letters tells you the correspondence.
AB ⇔ DB
AC ⇔ DE
BC ⇔ BE
∠A ⇔ ∠D
∠ABC ⇔ ∠DBE
∠C ⇔ ∠E
Circumference=2pir
r=5
pi=3
circumference=(2)(3)(5)
circumfernce=6(5)
circufmerence=30
answer is 30cm