Which expression would be easier to simplify if you used the commutative property to change the order of the numbers?
A. (–130) + 42+(-20)
B. 140 + 60 + 17
C. (-1/5) + 2/5 +(-1/2)
D. 75.5 +5.5+ (-125)

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)

the answer is -1 1/5, also a

hope i

-lavira : )