Khloe goes into a snack bar with exactly $20.00. She buys five bottles of water that cost $1.52 each and a pack of gum that costs $0.80. The snack bar prices tax. After she pays and receives her change, Khloe's friend Andy gives her half the cost of the water bottles. how much money does she have now?

2160ft3

step-by-step explanation:

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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