30t=50(t-1)
30t=50t-50
30t-50t=-50
-20t=-50
t=-50/-20
t=2.5 hours after the freight train leaves the station they will meet
Answer:
.
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
<u>Given </u><u>expression</u><u> </u><u>:</u><u>-</u>
It will be composite if it will has more than 2 factors ( other than 1 and itself )
<u>If </u><u>n </u><u>=</u><u> </u><u>1</u><u> </u><u>:</u><u>-</u>
<u>If </u><u>n </u><u>=</u><u> </u><u>2</u><u> </u><u>:</u><u>-</u><u> </u>
- 4*2 + 3
- 8 + 3
- 11 ( prime )
<u>If </u><u>n </u><u>=</u><u> </u><u>3 </u><u>:</u><u>-</u><u> </u>
- 4*3+3
- 12+3
- 15 ( composite )
Subtract 88x from both sides. This will put all x coefficients on one side of the equation, and all constants on the other side, allowing her to easily find the value of x from there.
The equation would then become