A bookstore sold 43 paperback and hardback books. Each paperback book cost $4.50 and each hardback book cost $12.00. If the bookstore made a total of $276 in sales for one day, how many paperback books did they sell

a framing bias

step-by-step explanation:

rodrigo is subject to a framing bias i believe.

can i see the following ?

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

t

step-by-step explanation:

ever thing time 1 is a multiply by 1 it get