Answer: There are 16 fish that he can keep in the aquarium.
Step-by-step explanation:
Since we have given that
Length of aquarium = 4 feet
Width of aquarium = 1 foot
So, it forms a shape of cuboid.
As we know the formula for "Volume of Cuboid":

According to question, Each fish needs atleast 0.5 cubic feet of water.
So, Number of fish that he can keep in the aquarium is given by

Hence, there are 16 fish that he can keep in the aquarium.
Answer:
45 stickers
Step-by-step explanation:
630/42 = 15 (represents the number of stickers in each pack)
Since there ar 3 packs, we multiply 15 by 3.
3 x 15 = 45
45 stickers.
tadah!
To re-phrase this: 50 is a certain percent of 90.
this can be written mathematically as 50=x%*90
let's divide both sides by 10:
5=x%*9
and divide both sides by 9:

which in decimals is approximately 0.56 (but not exactly).
so 0.56=x%
and the x then 56
so 50 is
approximately 56% of 90:
exactly 56%of 90 is 50.4
The second one
Hope this helps :D