Train a departs station one traveling at 75 mph. train n departs station two 30 minutes later traveling at 45 mph. the stations are 300 miles apart. the equation below gives the distance between the trains, d, in miles as a function of, t, the time after train b departs. d=|262.5-120t| for which two values of t will d=50? round to the nearest tenth. a)1.8 and 2.6 b)0.2 and 0.3 c)-17.8 and 26.0 d)-1.8 and 1.8

B

Step-by-step explanation:

the answer is:

engaging in a sit-in, in which african americans stay at a segregated business.

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