Answer and Step-by-step explanation:
Dog meets the train in = 4 minutes
Train catches up the dog in = 12 minutes
Let x be the time when train leave the route,
Train catch up the dog in 12 minutes, the endpoint of route is x and the dog meet up the train in 4min, so the equation becomes:
12 - x = 4
To find out the value of x, subtract 12 from both sides, we get
x = 4 – 12
-x = -8
Which gives x = 8, when train leaves the endpoint of route.
Answer:
6x^3 − 17x + 10
Step-by-step explanation:
12x3 - 3(2x3 + 4x -1) - 5x + 7 Simplifed is 6x^3 − 17x + 10
60 + 0.50(x - 40) < = 270
60 + 0.50x - 20 < = 270
40 + 0.50x < = 270
0.50x < = 270 - 40
0.50x < = 230
x < = 230/0.50
x < = 460 miles
A is 3 rows and 1 column : 3 x 1
F is 1 row and 2 columns: 1 x 2
Therefore, the matrix doesn't exist
Ahh, yes, college can be very had for math. I do struggle with simple fractions.
Jokes aside, 12/6 can be simplified to 2/1 or plainly 2
