For the following set of 20 numbers: 1, 3, 20, 23, 25, 30, 30, 31, 32, 33, 33, 34, 34, 40, 40, 42, 43, 43, 44, 44

Are there any outliers in the data set above? Use the 1.5 IQR rule to check.

Q1 =

Q3 =

IQR =

IQR(1.5) =

Q3 + IQR(1.5) =
(Upper outlier)

Q1 - IQR(1.5) =
(Lower outlier)

I cannot answer all of this, so I will only answer what I can:

Q1: 13

Q3: 22.5

IQR: 13.5

IQR(1.5): 20.25

Q3 + IQR(1.5) = 43

Q1 - IQR(1.5) = -7.25

I don't know if my calculations are all right but I hope this helps! :)

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