Answer:
This is called a sample.
In statistics, we take a random 'sample' of people so that we can estimate values for the entire population!
So, say for example you want to find out what percent of students in your school are girls. You take a sample, like this again, of 30 students, and 3/10 are girls, then you can apply it to the rest of the population.
Hope this helps!
P.S. Stay Safe!
s = 3x - 15 is the required expression for perimeter of table top
Perimeter of square tabletop is 240 cm
<em><u>Solution:</u></em>
A square tabletop has an area given as:
The dimensions of the tabletop have the form cx - di ,where cand d are whole numbers
To find perimeter of tabletop when x = 25 centimeters
Let us first find the length of each side of square
<em><u>Given area is:</u></em>
We know that,
Therefore,
Taking square root on both sides,
s = 3x - 15
The above expression is the required expression for perimeter of table top
<em><u>To find perimeter when x = 25 centimeter</u></em>
<em><u>The perimeter of square is given as:</u></em>
perimeter = 4(3x - 15)
Substitute x = 25
perimeter = 4(3(25) - 15)
perimeter = 4(60) = 240
Therefore perimeter of square tabletop is 240 cm
First you take the original set and subtract it by the sale set. After that you take you new answer and divide it by the original and you will get a percent that you can round too
<span>1. </span><span>So we have the system of
equation. (4, -3)
let’s create another system of equation.
Let a = 4
and Let b = -3
First equation
=> Let’s pick any numbers to be used. Let’s have number 5
=> 5a + 5b
=> 5 (4) + 5 (-3)
=> 20 + (-15)
negative and positive is equals to negative
=> 20 – 15
=> 5 (this the first value of our equation, let this be the value of X)
Second
=> Pick another number, Let’s have 6
=> 6a + 6b
=> 6 (4) + 6 (-3)
=> 24 + (-18)
=> 24 – 18
=> 6 (this is the value of our second equation, let this value be Y)
Now, we have (A, B) = (4, -3) and (X, Y) = (5,6)</span>
