Answer:

Step-by-step explanation:
and
does not have any common factor except for 
Answer:
I dont get what you are asking can you put more detail for what you want the answer to be please
Step-by-step explanation:
Answer:
4 hours
Step-by-step explanation:
3+1=4
Area of <span>trapezoid=(7+3)*h/2=20 cm2
10*h/2=20
5h=20
h=4
the answer is 4.0 cm</span>