Answer:
The number of Pencils purchased and the cost of pencils represents a proportional relationship.
Step-by-step explanation:
As we know that proportional relationships between two variables have equivalent ratios.
For example,
3/12 = 9/36 is a TRUE proportions because both fractions reduces to 1/4, and because 12 × 9 = 3 × 36.
As our problem suggests whether the number of Pencils purchased and the cost of pencils represent a proportional relationship?
Given
It means ach pencil costs $0.25.
So
- If Sarah buys 1 pencil it would cost = $0.25
- If Sarah buys 2 pencils it would cost = $0.5
- If Sarah buys 3 pencils it would cost = $0.75
- If Sarah buys 4 pencils it would cost = $1
Lets make a table:
No of Pencils Purchased Cost
1 $0.25
2 $0.5
3 $0.75
4 $1
so
Cost/No of Pencils Purchased = 0.25/1 = 0.5/2 = 0.75/3 = 1/4
So cost per pencil = 0.25 : 1
Since all of the ratios are equivalent, this table is a proportional relationship.
Therefore, the number of Pencils purchased and the cost of pencils represents a proportional relationship.
Yea it does rapresent a function because it is not in a straight line
30 is the answer because 30*25=750
The complete question is;
Below are last week's revenues (in thousands of dollars) for six different Nancy's Noodles locations. 6, 6.8,3.7,8.1,6.6,7
Find the median revenue.
Answer:
Median = 6.7 thousand dollars
Step-by-step explanation:
From the question, the 6 revenues in thousands of dollars are;
6, 6.8, 3.7, 8.1, 6.6, 7
To find the median, we need to arrange the terms in ascending order.
Thus, we have;
3.7, 6, 6.6, 6.8, 7, 8.1
Since the number of terms are 6,then the median term is (6 + 1)/2 = 7/2 = 3.5th term
To get the 3.5th term, we have to find the average of the 3rd and 4th terms in the series of revenue.
3rd term = 6.6 and 4th term = 6.8
Thus, median = (6.6 + 6.8)/2
Median = 13.4/2
Median = 6.7 thousand dollars
For this case we have that the expression in its exact form is the same, that is:
If it is expressed in decimal form we have:
If we want equivalent expressions, we must first mention the following property of powers and roots:
![\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}](https://tex.z-dn.net/?f=%5Csqrt%20%5Bn%5D%20%7Ba%20%5E%20m%7D%20%3D%20a%20%5E%20%7B%5Cfrac%20%7Bm%7D%20%7Bn%7D%7D)
Then, we can rewrite the expression as:
Answer:
