The sum of the speeds of two trains is 719.9 miles per hour. if the speed of the first train is 8.1 mph faster than that of the second train, find the speeds of each.

first train: 364 mph

second train: 355.9 mph

Step-by-step explanation:

719.9 = x+x+8.1

711.8 = 2x

x = 355.9

6^2 or 36

step-by-step explanation:

6000n

6×1000n

6×10^3 n

so we need 6n need to be a perfect cube

so n has to be 6^2 so that 6n is 6^3

what i'm saying is if you let n be 6^2 you have 6^3×10^3 or 60^3 which is a perfect cube

first, let's see what the pattern is.

58 - x = 47

46 - x = 36

x = 9

so this means that the term after 25 is 25 - 9:

the next term in the sequence is 16.