Answer: 5 hours
Step-by-step explanation:
If 10% of 140 is 14. And if 14 mg of caffeine is leaving per hour then it would take 10 hours to completely leave from ones body, but for half of it to leave it would take 5.
Answer:
0.25
Step-by-step explanation:
0.38 - 0.13 = 0.25 inches
Answer:
It dosn't matter which direction the car is going, it's going 45 km/hr thus it's going 45/2 in 0.5 hr = 22.5 km
Step-by-step explanation:
Answer:
13
Step-by-step explanation:
x*x=12*12+5*5
x*x=144+25
x*x=169
x=13