Xavier currently has 40 toy cars. Xavier believes he will have double that amount of toy cars within 2 years. Which interval correctly represents the number of toy cars owned by Xavier over the next 2 years? [40,80]

[0,40]

(40, ∞)

(40,80)

[0,80]

step-by-step explanation:

x = 3 ± √(5+y)

the second option

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)