4 The number of sweatshirts a vendor sells daily has the following probability distribution.
Number of Sweatshirts x
P(x)
0 1 2 3 4 5
0.3 0.2 0.3 0.1 0.08 0.02
If each sweatshirt sells for $25, what is the
expected daily total dollar amount taken in by the
vendor from the sale of sweatshirts?

go and ask your mom to you

3

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

(x) - (y) = (1 + 4i)