The number of kilograms of water in a person's body varies directly as the person's mass. A person with a mass of 90 kg contains 60 kg of water. How many kllograms of water are in a person whose mass is 75 kg?

50 kilograms

Step-by-step explanation:

The example had a ratio of 90:60, which simplifies down to 3:2 (just like a fraction), and 90 divided by 3/2 is equal to 60

If we apply that ratio to 75, we do the same thing. 75 divided by 3/2, or 75 multiplied by 2/3, or 50. (75/3=25, 25*2=50)

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

if im not mistaking its

step-by-step explanation: