Let the slower train's velocity be x-21
Let the faster train's velocity be x
We know that the approach speed is the sum of both speeds, so x+x -21= 2x-21.
The approach rate is given by Distance/time = 471/3 = 157mpH
x+x-21=157
2x=157+21
2x=178
x=89mph
The slower train is travelling 89-21 = 68mph
The faster train is travelling 89mph.
Answer:
00343434454151553647410053543804147
Step-by-step explanation:
Las razones de los lados de un triángulo rectángulo se llaman razones trigonométricas.
Espero te ayude :)
To find this answer, we need to multiply 3.57 by 12.
Therefore, 12 planks will cost $42.84.
