Answer:
The answer is
negative 12 s squared + 11 s t minus 2 t squared
Step-by-step explanation:
( - 3s + 2t)( 4s - t)
Expand the terms
We have
- 12s² + 3st + 8st - 2t²
Simplify
We have the final answer as
<h3>- 12s² + 11st - 2t²</h3>
Hope this helps you
Answer:
25
Step-by-step explanation:
Hour one:
Eastbound train- 65 mi
Westbound train- 85 mi
150 miles apart
Hour two:
Eastbound train- 130 mi
Westbound train- 170 mi
300 miles apart
Eastbound train travels 32.5 miles in 30 min, Westbound train travels 42.5 miles in 30 min
Two and a half hours:
Eastbound train- 162.5 mi
Westbound train- 212.5 mi
So 32=(number of boxes) times (number of books per box)
number of books per box=8
number of boxes=n
32=n times 8
so equation is
32=8n
sol divide both sides by 8
32/8=8/8n
4=1n
4=n
4 boxes
5x+2-x=9
-2 -2
5x-x=7
4x=7
--- ---
4 4
X= 1.75
