Aubrey coach asked her to bring 5 liter of water to practice. How many 500-milliliter bottles does aubrey needs to buy to have exactly enough water?

10 water bottles

Step-by-step explanation:

We know that there are a total of 1000 milliliters in a 1 liter. So we first need to multiply 1000 milliliters by 5 in order to calculate how much is in 5 liters which is what the coach is asking for...

1000 * 5 = 5000 milliliters

Since each water bottle only holds 500 milliliters we need to divide this amount by the total that the coach needs in milliliters.

5000 / 500 = 10

Finally, we can see that Audrey needs to buy a total of 10 water bottles to have exactly enough water.

a

step-by-step explanation:

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a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional