5. Sasha is signing her daughter up for dance classes. There is a one-time costume fee of $35 and each dass costs $15. Sasha paid a total of $155.
how many classes did she sign up for?

A. 13 classes
B. 8 classes
C. 10 classes
D. 4 classes

it is x=-4

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)

cause it equals more