Stephen cells DNA bicycle for $139 and a helmet for $17 the total cost for Jin is 130% of what Stephen spent originally to buy the bike and helmet how much did Stephen spend originally how much money did he make by selling the bicycle in the helmet to gin

where's the diagrams?

answer: 12   they all have at least 28 days

step-by-step explanation: haha

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