A homeowner plans to hang wallpaper on one wall of a bedroom that is 15 feet long. If a strip of wallepe wallpaper is 20 INCHES wide and strips are hung vertically, how many strips of wallpaper will the homeowner require?

The homeowner will require 9 strips of wallpaper.

Step-by-step explanation:

The question is asking "how many 20 inches fit into 15 feet?".

We know that

1  foot  = 12 inches;

therefore, 15 feet will be

15 ft * 12 in/ft  = 180 in.

Now, the number of 20 inches wallpaper strips that will fit into 180 in long wall will be

180 in/ 20 in  = 9

Therefore, the homeowner will require 9 strips of wallpaper.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m