Answer:
2 cookies per dollar
Step-by-step explanation:
You can take any point on the line, turn it into a fraction and simplify.
For example: 4 cookies cost $2.
4 cookies per 2 dollar is 2 cookies per 1 dollar (divide by 2)
If you take another point, e.g., 14 cookies for 7 dollar, you'll be dividing by 7 to simplify and get the same answer.
Answer:
17 7th graders
Step-by-step explanation:
grd 8 is x, grd 7 is y
x+y=53
x=3y-15
use substitution: (3y-15)+y=53
4y-15=53
4y=68
y=17
The number of combinations of 10 different things taken 4 at a time is:

The answer is: 210
Answer:
Subtrahend
Step-by-step explanation:
This subtraction problem is in the following form:
Minuend - Subtrahend = Difference
The Subtrahend is the number that is to be subtracted from the Minuend.
In this problem the 10 is the minuend, the 4 is the subtrahend, and 6 is the difference.
~Hope this Helps!~
So first you add 8 and 2 to get 10. This means that Kevin is 10 years old now. If he is currently twice as old as his brother it means that you divide 10 by 2 to get 5. Kevin's brother is 5 years old.
Answer: 5 years old