Addison has a bag of 25 colored pens. there are9 blue, 5 red, 7 black, and 4 green. addison will pick a pen from the bag, without looking, record the color and put it back in the bag. if addisondoes this 200 times, about how many times can she expect to pick a blue pen? show all work

a. 9
b. 25
c. 72
d. 180

false

step-by-step explanation:

so what is the problem what are they asking you to solve

step-by-step explanation:

so what is the problem what are they asking you to solve

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

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c. histogram

step-by-step explanation: