In the beginning number of students are 18 .
And each year they increase by 2, that is
18 , 18+2, 18+2+2 , 18+2+2+2,.......
So the series is in arthmetic progression, where first term is 18 and common difference is 2 .
To find the 25th term, we will use the following formula
a(n) = a + (n-1)d = 18+(25-1)*2 = 18 + 48 = 66
And to find the sum , we will use the following formula
S = 0.5 n (a+l), where l is the last term which is 66.
S =0.5*25(18+66) = 1050
Correct option is the third option .
Ok, so you have the range correct. It is
120<___<150
(It should be less than or equal to, but there's no symbol for that, to my knowledge.)
But the term in the middle shouldn't be .25x
The reason is because that actually quadruples the price in the end, as you seem to have found out. Rather, instead of multiplying x by .25, multiply the numbers in the range by .75.
Here's why:
When you reduce something in price by 25%, you are paying for 75% of the original price. Not 25%. That would be a 75% discount.
So, in all actuality,your answer would be $90
Outliers are data that are in a very far distance from other values in a set of data
Once an outlier is detected in a set of data, we can do the following to them:
- Discard the outlier
- Change the value of the outlier with another value within close range
- Consider the distribution given
We may have a set of data where some of the <em>values are far in distance from the majority of the data</em>. The set of such data are known as an outlier.
For example, give the set of data;
45 can be considered as an outlier since the <em>distance of data</em><em> to all other data is</em><em> large</em><em>.</em>
Once an outlier is detected in a set of data, we can do the following to them:
- Discard the outlier
- Change the value of the outlier with another value within close range
- Consider the distribution given
Learn more here: brainly.com/question/23258173
If I'm thinking correct it would say 5 120. HOPE I HELPED>
Answer- your answer would be 5/11