time= distance/speed
take distance as d. take time as t.
the time taken: d/ 65 for the train however it is the same distance for d/130 so we can say (d/65)-3 = d/130
now solve the equation, multiply both sides by 130
2d-390=d
2d-d=390
so d=390 mi
Im not %100 sure but i think its 24a^2 - 42ab - 24b2
The answer is A because it's the only one that actually makes sense anyway
D. Is correct hope that helped w
The answer is A (2) cause if you were to rotate it twice it’d go back to its original form