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:
This is the answer
Step-by-step explanation:
-7/8
-1 1/7 is in improper fraction form -8/7
-8/7x = 1
x = -7/8
depends on the number... using a variable it would be 1/2n+15
It's easy. Half of a number would be dividing it in half then adding 15.
14c³d²-21c²d³/14cd
= (196c^4d³-21c²d³)/ 14cd
= (196c³d²-21cd²)/14
= (28c³d²-3cd²)/2
I hope that's help !
