Multiply: (5x ? 2)(4x2 ? 3x ? 2) a) 20x3 + 23x2 + 4x + 4 b) 20x3 ? 23x2 ? 4x + 4 c) 20x3 ? 23x2 ? 16x + 4 d) 20x3 ? 7x2 ? 4x + 4

i dont know

step-by-step explanation:

umm. i dont know

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)

when the daily mileage is greater than 40 miles, unlimited mileage plan will save you money. 40 miles is the break-even point.

step-by-step explanation: