Select the property of equality used to arrive aselect the property of equality used to arrive at the conclusion.
if x = 2, then x + 8 = 10
a. the multiplication property of equality
b. the division property of equality
c. the addition property of equality
d. the subtraction property of equality

the answer would be D., x+8=10  you are going to subtract 8 from both sides to get x=2

the answer is c. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

part a: triangles gcb and epb

part b. sides cg and rp are parallel by definition of parallelogram.

angles cgb and e are congruent by being alternate interior angles of parallel lines cut by a transversal. angles gbc and ebp are congruent because they are vertical angles. by aa similarity, the triangles are similar.

part c. since the triangles are similar, the ratios of the lengths of corresponding sides are equal.

calculation of be:

gb/be = cb/bp

(400 ft)/be = 300/200

(400 ft)/be = 3/2

3be = 2 * 400 ft

3be = 800 ft

be = 800/3 ft

calculation of pe:

gc/pe = cb/bp

(350 ft)/pe = 300/200

(350 ft)/pe = 3/2

3pe = 2 * 350 ft

3pe = 700 ft

pe = 700/3 ft