Sean is a bookworm. On average, he reads 1 1/2 pages in 3 1/3 minutes. Sean's average unit rate for reading is
pages per minute.

9/20 pages/minute = .45 pages/min

Step-by-step explanation:

3/2 pages /  10/3 minutes = 3/2 x 3/10   = 9/20 pages per minute or .45 pages/min

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