After dropping a penny off the edge of a cliff at the Grand Canyon, you notice the penny falls 16 feet the first second, 48 feet the next second, and 80 feet the third second. The penny continues to fall in this way which models an arithmetic sequence. What is the total distance the penny will fall in 5 seconds? Write your answer numerically.

the answer is a

step-by-step explanation:

because if you put 1 in to the square root of x it equals 300.

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)