a car travels at a speed of 55 km/h. Find the distance travelled by the car in every 12 min and 30 seconds, giving your answer in meters.

1 hour = 60 minutes

1 km = 1000 meters

55 x 1000 = 55,000 meters

55,000 / 60 minutes = 916 2/3 meters per minute

916 2/3 meters per minute x 12.5 minutes = 11,458 1/3 meters every 12 minutes and 30 seconds

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

answer:   (s+1)(s+4)

step-by-step explanation:

factor s2+5s+4

s2+5s+4

=(s+1)(s+4)