Given:
Total number of students at Colfax Middle School = 270
Ratio of boys to girls is 5:4.
Total number of students at Winthrop Middle School = 180
Ratio of boys to girls is 4:5.
The two schools hold a dance and all students from both schools attend.
To find:
The fraction of the students at the dance are girls
Solution:
There are 270 students at Colfax Middle School, where the ratio of boys to girls is 5:4.
Number of boys 
Number of girls 
There are 180 students at Winthrop Middle School, where the ratio of boys to girls is 4:5.
Number of boys 
Number of girls 
Now,
Total number of students in both schools 
Total number of girls in both schools 
The fraction of the students at the dance are girls is
Therefore, the required fraction is 
.
Let
x= total cost of cars
y= total commission paid out for all cars sold
6%= 6/100 = .06
Set up an equation:
y= .06(x)
Given: x= $125,650
substitute into the y= .06(x)
multiply $125,650 by .06.
The answers would be: 7539
hope this helped :)
Answer:
Step-by-step explanation:
A Parameter is a value that represents a property of a population. This could be the population mean.
A statistic is a value that represents a property of a sample. This could be the sample mean.
In the given scenario, the population is the entire 14 teams. This means that the percentage given is a value representing a property of the population. Therefore, the correct answer is
C. Parameter, because the data set of all 14 teams is a population.
So we can start with the full of possibilities and eliminate them one by one.
The full set is {0,1,2,3,4,5,6,7,8,9}.
Now we know that any prime greater than 2 is odd as otherwise it would have 2 as a factor, so we can eliminate all of these digits that would be an even number, leaving:
{1,3,5,7,9}
We also know that any prime greater than 5 cannot be a multiple of 5 and that all numbers with 5 in the digits are a multiple of 5, so we can eliminate 5.
{1,3,7,9}
We know that 11,13,17 and 19 are all primes, so we cannot eliminate any more of these, leaving the set:
{1,3,7,9} as our answer.
