The Smiths are moving across the country . Mr. Smith leaves 3 hours before Mrs. Smith . If he averages 55 mph and she averages 65 mph , how many hours will it take Mrs. Smith to catch up to Mr. Smith ?

answer: 7270

step-by-step explanation:

idk

step-by-step explanation:

payback

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 to this is 4340

hope this if needed hmu