Answer:
340 miles
Step-by-step explanation:
From definition of speed, it's distance traveled per unit time
Speed=Distance/time
Making distance the subject
Distance=Speed* time
Substituting speed of 85 miles per hour and time of 4 hours
Distance=85*4=340 miles
Therefore, if the train maintains the same speed, the distance between Sue's house and Kentucky is approximately 340 miles
Answer:
61.5 cm^3
Step-by-step explanation:
Answer:
a = 4
Step-by-step explanation:
Ez, I did it where 6a - 3a which is just 3a and added the 21 to the other side. So now it is 12 = 3a which is simply 4.
Not sure but i think the answer is
0.28
Answer:
Fir trees are 9 meters and the pine trees are 12 meters tall.
Step-by-step explanation:
Let the height of the fir tree = x and the height of the pine tree = y (in meters).
It is given that the combined height of both the trees is 21 meters.
That is, 
Also, the height of 4 fir trees is 24 meters more than that of the pine tree.
That is,
i.e. 
So, we get the system of equations,
x+y=21
4x-y=24
Adding both the equations, gives us,
5x = 45 i.e. x= 9.
So, x+y=21 ⇒ y= 21 - x ⇒ y= 21 - 9 ⇒ y= 12.
Thus, the fir trees are 9 meters tall and the pine trees are 12 meters tall.