if 1.5 million people are in a 2 blocks by 2 blocks area of times square on new years eve, approximately what is the density per square block

sorry I don't know the answer

Density per square block means the area:

Area = Length x width = 2 x 2 = 4 square blocks.

Now for density divide the population by the area:

1.5 million people / 4 square locks = 375,000 people per square block

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