Trey stepped onto an escalator moving at a constant rate. the table below shows his distance from the first floor after different amounts of time. time (seconds)6 9 12 15 distance (centimeters)1070 980 890 800 answer the following questions.
(a)what was trey's distance from the first floor when he stepped onto the escalator?

(b)choose the statement that best describes how the time and his distance from the first floor are related. then give the value requested.

as time increases, his distance from the first floor decreases.
at what rate was his distance from the first floor decreasing

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

0.50 , 0.75

step-by-step explanation:

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c