Which situation can be represented by the expression 1.3? Group of answer choices B. The area of a rectangle with side lengths 1.3 and x A. The total cost of an item that is x dollars more than $1.30 D. The number of square feet in each lot when 1.3 acres is partitioned into x equal sections C. The amount of change when $1.30 is used to pay for an item costing x dollars

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 answer is a) y= 2 csc [0.5 (x+pi/2)]-1

step-by-step explanation:

x< 2

step-by-step explanation: