Well, ratios are basically fractions. There are 12 boys, so the ratio is 12/25. Since 25 - 12 is 13, there are thirteen girls, so the ratio of girls to student is 13/25.
So first you take 7/250*x/10000 and you cross multiply. Then you get
70000=250x
and the answer is
x=280
I hope this helps!!!!!!!
Sur it's a function because for each x value corresponds one and only one y value.
Another easy way to determine if y is a function is to apply the vertical test:
If you draw a vertical line and this lines intersects the graph in one point, then y is a function
Answer:
The linear equation represents a proportional relationship and its constant of proportionality is 
.
Step-by-step explanation:
A proportional relationship exists when the following relationship is observed:
Where:
- Dependent variable.
- Independent variable.
- Proportionality constant.
If 
and 
and 
, the following expresion is found:
The linear equation represents a proportional relationship and its constant of proportionality is .
Swap the shortest and longest pencil's places. You don't have to move the middle pencil.
