(7^8×7^3×7^4)/(7^9×7^5)=(7^(8+3+4))/(7^(9+5))=(7^15)/(7^14)=7^1=7
The answer is 7.
Use the pythagorean theory and use the formula a^2+b^2=C^2
Answer:What is the proportionality constant in the 3y 2x equation? Since the equation can be written in the form y = kx y = k x, y varies directly with x and k. The variation constant k is 23.
Answer:
t=2.5 hours after the freight train leaves the station they will meet.
Step-by-step explanation:
30t = 50 (t - 1)
30t = 50t - 50
30t - 50t = -50
-20t = -50
t= -50/-20
Therefor, t=2.5 hours after the freight train leaves the station they will meet.