Answer:
The answer is 9.
Step-by-step explanation:
Because 7 + 9 + 11 + 13 = 40, 9 is the 2nd number in the problem.
A, C
9514 1404 393
20 minutes
The trains are separating at the rate of 80 +70 = 150 km/hour. The time required to be 50 km apart is then ...
time = distance/speed = (50 km)/(150 km/h) = 1/3 h = 20 minutes
x+2 volts is what I got.
-10p +9p =12
combine like terms
p(-10+9) =12
-p =12
divide by -1
p = -12
