1. A random sample of 6 dogs were selected. The owners helped the dogs 1 point
demonstrate the number of tricks they were able to perform. The results
were 12, 9, 7, 3, 8, and 2 tricks. What is the standard deviation of the number
of questions that were answered incorrectly by these students? Interpret
this value.

32

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

idk what the heck he answer is, i’m just putting this here so i finish my account