Step-by-step explanation:
1) 9x - (-5 + 6x) = 9x + 5 - 6x
Solving like terms
3x + 5
2) 9x - 5 - 6x
3x - 5
3) 9x - 6x + 5
3x + 5
4) 9x - 6x - 5
3x - 5
5) 9x - (-6x + 5)
9x + 6x - 5
15x + 5
2 and 4 are the expressions
Answer:
I don't know this at all I'm sorry, but ur down bad yo
Step-by-step explanation:
Answer:
8:04 am
Step-by-step explanation:
The first train travels 60 miles from 6am to 7am
So at 7am the trains are 455 - 60 = 395 miles apart
First train: Distance from town A (DA) = Velocity* time = 60t
Second train: Distance from town B (DB) = Velocity*time = 70t
So, DA + DB = 60t + 70t
395 = 130t
t = 395/130
= 3.4 hrs
= 3 hrs 4 mins
The first train left at 5am so the exact time would be 8:04am (5am +3 hrs and 4 minutes)
To simplify this, we must combine like terms.
3x, -3x, and 5x will be combined with each other
3 and 7 will be combined
3x-3x+5x= 5x
3+7=10
so our simplified expression is <em><u>5x+10</u></em>
It’s choice D since there are 6 0’s