Answer: Order if operations
Step-by-step explanation:
15-10n+12n
15+12n
Area of rectangle = Length x Width
<span>Length = Area/Width = 122.5 / 7 = 17.5 feet</span>
Answer:
The correct answer is E.
Step-by-step explanation:
First I look for the relationships between the coefficients. The first term corresponds to the base value.
The second term corresponds to the value obtained when the density of the underlying material is doubled and the daily usage of the equipment is halved.
With the I get the ratio of coefficients of 
:
= 8
= 64
Now I calculate the percentage increase in the useful life of the equipment as:
% = 
* %100 = %800
If the two triangles are congruent it means that their side lengths are equal, so we can assume that x = 3x - 8 and so 2x = 8 and x = 4. Hope that helps :)
Answer:
(E) Number of students in the data set
Explanation:
A variable, in research and data collection, refers to something that is being measured and can have changing values.
The example above shows that student birth month is a variable since we can have a range of options from January to December. Political affiliation is also a variable since the students can state whether they follow certain political parties or even whether they do not. Student age is a variable too, with answers from a range of numbers such as 20-25, since they are college students. Student address is a variable as well since students will have varying answers, be it those who live in the same address or different ones.
However, number of students in the data set is not a variable – it is instead the number of research participants. It can be a population or a sample, depending on what the research is about.
