Elisa's mom teaches at a preschool. there is 1 teacher for every 12 students at the preschool. elisa is setting up equivalent ratios to find the number of teachers at the preschool. determine her mistake and correct it.

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)

i can answer this if i have the answer choices

i believe b is the answer

the answer to 1/4x+5/3x-4=2-1/12x is x=3

hope this if needed hmu