4The Freedom Tower in New York City has 102 floors with elevators that travel at astonishing speeds. The scatterplot shows the relationship between the floor number, y, and the average
number of seconds the elevator takes to descend from floor 102 to floor x.
Freedom Tower
Floor number
110
100
90
80
70
60
50
40
30
20
10
х
3
6 9 12 15 18 21
Time (seconds)
nme
to D
What is the best prediction for the number of seconds it will take the elevator to descend
from floor 102 to floor 50?

answer for #1 is c

answer for #2 is d

can i get brainliest

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.