Elise and Kenji are making presentations for a class project. Elise's slideshow starts with a verbal introduction that is 14 seconds long,
and then each slide is left up for 4 seconds. Kenji leaves each slide
onscreen for 7 seconds, and his introduction lasts 5 seconds. Elise
and Kenji notice that their presentations have both the same number of slides and the same duration. How long is each presentation? How
many slides are in each presentation?

exactly you go it

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

sorry i got nothing

step-by-step explanation: