Since Krystal and Scott is heading on opposite
directions, therefore the distance between the two would be the sum of their
distances from where they left, so:
total distance (d) = distance covered by Krystal (dK) +
distance covered by Scott (dS)
d = dK + dS
We know that the formula for distance is:
distance = velocity * time
So,
d = vK * t + vS * t
where
vK = velocity of Krystal = 61 mph
vS = velocity of Scott = 65 mph
d = 252 miles
Therefore:
252 = 61 t + 65 t
126 t = 252
t = 2 hours
Therefore Scott needs to travel for 2 hours.
Answer:
Step-by-step explanation:
3021
Answer:
Solving the equation 
for variable n we get 
Step-by-step explanation:
We need to solve the equation for variable n
Solving:
Subtract both sides by 6p
Switch sides of equality
Divide both sides by 3
So, solving the equation for variable n we get
The simplified form is 12x-40
