Stephanie recorded the time, in minutes, she took to walk from home to work. {15,16,18,20,21}She also recorded the time, in minutes, she took to walk from work to home. {14,21,21,25,27}Based on the data she collected, what is the best conclusion Stephanie can make? A. The range of times for walking to work is more than for walking home.
B. The range of times is the same for walking to work and walking home.
C. Stephanie’s walk times are more spread out coming home than going to work.
D. Stephanie’s walk times are more spread out going to work than coming home.

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

no

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