In a survey, 70 out of 84 people from the north prefer professional football over college football. 120 people from the south were asked the same question. In order for favorite type of football and region to be independent, how many people in the south would have to prefer professional football

100 =x

Step-by-step explanation:

We want the same ratio

70       x

=

84          120

Using cross products

70*120 = 84x

Divide each side by 84

70*120/84 = x

100 =x

100 people

Step-by-step explanation:

So if we know that 70 out of 80 prefer pro football in ht north then we could set up a proportion to solve how many will prefer pro football in the south over the total of 120.

  =?

84x = 8400

x= 100  

Now we could say that a 100 people has to prefer professional football .

step-by-step explanation:

ddd

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.