let t = time (hrs) that they are 50 mi apart
Use pythag here; a^2 + b^2 = c^2; dist = speed * time
(30t)^2 (40t)^2 = 50^2
900t^2 + 1600t^2 = 2500
It's obvious that t = 1 hr
Answer:
2x - 4
Step-by-step explanation:
D.$6,270 you just multiple
Answer: 207
Step-by-step explanation:
