Answer:
The number of Pencils purchased and the cost of pencils has a proportional relationship.
Step-by-step explanation:
In order to figure out if a proportional relationship between two variable exists,
- All you need is to check if relationships between two variables have equivalent ratios.
- If the ratios between two variables is same, it means a proportional relationship between two variable exists.
Lets take a simple example:
As
2/10 = 9/45 is a TRUE proportion.
The reason is that both fractions reduces to 1/5, and
because 10 × 9 = 2 × 45.
So
In the equation it needs to be determined whether the number of Pencils purchased and the cost of pencils represent a proportional relationship?
When we are given that:
In other words each pencil costs $0.25.
As each pencil costs $0.25, it means:
2 pencils cost $0.5, 3 pencils cost $0.75, and 4 pencils cost $1 and so on.
Thus
Cost ÷ No of Pencils Purchased = 0.25 ÷ 1 = 0.5 ÷ 2 = 0.75 ÷ 3 = 1 ÷ 4
And the ratio is same.
i.e. cost per pencil = 0.25 : 1
As all of the ratios are same, we can determine that it has a proportional relationship.
Therefore, the number of Pencils purchased and the cost of pencils has a proportional relationship.
Answer:
7.736
Step-by-step explanation:
To find the value of g(2.3), you need to substitute 2.3 for x
g(x) = 4.7 + 1.32x
so;
g(2.3) = 4.7 + 1.32*2.3
= 7.736
Answer:
7 points
Step-by-step explanation:
started out w/ 5 points, then loses 8
5 - 8 = -3
gains 10 points
-3 + 10 = 7
The expression should be 75+20x. For every nine minutes (75+20(9)) the oven temperature should be at 255 degrees.
Okay so first you do
1 7/8 = 15/8
Than convert 3/4 to 6/8 to have the same denominator
Than
15/8-6/8= 15-6= 9 = 9/8
So you can either have
9/8 or 1 1/8
Both are acceptable answers