Answer:
(not this) 3/4-5+9-2/4+2
Step-by-step explanation:
1 1/3 instead of 3/4 and 2/4
Answer: the rate of speed for train A is 66 miles per hour.
Step-by-step explanation:
Let x represent the speed of train B.
2 trains leave the station at the same time. Train A is traveling 16 miles per hour slower than train B. This means that the speed of train A would be x - 16 miles per hour.
The two trains are 720 miles apart after 4 hours. It means that both trains traveled a total distance of 720 miles in 4 hours.
Distance = speed × time
Distance travelled by train A after 4 hours is
4(x - 16) = 4x - 64
Distance travelled by train B after 4 hours is
4 × x = 4x
Since the total distance travelled by both trains is 720 miles, then
4x - 64 + 4x = 720
8x = 720 - 64 = 656
x = 656/8 = 82 miles per hour
The speed of train A would be
82 - 16 = 66 miles per hour.
Answer:
5x-42
Step-by-step explanation:
5x-7(2)-7(4)
5x-14-28
5x-42
Divide 120 by 4 and your answer will be: Rya can drive 30 miles on 1 gallons of gas.
Addition or multiplication
add 2 or times 2