When the temperature lowers the plants can freeze and die. One way to prevent that is to cover the plants so they dont freeze
80/60=
1.3333...........................................
Think of it this way:
-- Any time you have something that means (some number) PER UNIT,
it doesn't matter how many units there are on the table or in the bucket,
because that amount doesn't change the (number) PER UNIT.
-- If oranges cost $1 PER POUND, it doesn't matter how many pounds
you buy, the whole bagful is still $1 PER POUND.
-- If a certain salad dressing has 40 calories PER Tablespoon, it doesn't
matter whether you eat a drop of it or drink the whole jar. You still get
40 calories PER Tablespoon.
-- Density means '(mass) PER unit of volume'. Whether you have a tiny
chip of the substance or a whole truckload of it, there's still the same
amount of mass IN EACH unit of volume.
Explanation:
The input force is the push or pull that you do on a machine.
In the first picture, the input force is the down arrow on the end of the crowbar.
In the second picture, the input force is the down arrow on the rope.
In the third picture, the input force is the up arrow on the handles of the wheelbarrow.
Answer: 0.1524 km
Explanation:
We have to convert 
to kilometers, and we can do it knowing 
and 
:
Hence:
