Bill asks you to play a bet where he has a deck of cards and you choose what suit your card will be. You decide to play and bet $5 that you will choose the right suit of your card, if you choose wrong then you lose your $5, but if you choose right then you will win $10. If a deck of cards has a total of 52 cards and 4 suits, what is your expected value of the bet?

not sure but it may be b, as i said i'm not sure.

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

the opening of this porabola is facing up

step-by-step explanation: