Which set of values could be the side lengths of a 30-60-90 triangle? O A. {4,4.2.8}
B. {4, 4.2.8.2
O C. {4,4/3,8}
D. {4,4/3,8/3}

false

step-by-step explanation:

c

step-by-step explanation:

answer: y = -2.5x - 15

              (-6,0)

step-by-step explanation:

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)