Start by finding a common denominator.
In this case, it would be 21.
So, -12/21 + -28/21= -40/21
Answer:
-15x^2+30x
Step-by-step explanation:
Which list shows the mean, median, mode, and range in ascending order for the set of data below? 23, 15, 35, 31, 45, 19, 15, 22,
Marat540 [252]
If you're asking for the mean, median, mode, and range, I will do it for you.
The mean is the average, which is the sum of the numbers divided by the total amount of numbers there are.
15 + 15 + 15 + 19 + 19 + 22 + 23 + 24 + 27 + 30 + 31 + 35 + 41 + 44 + 45.
The sum of these numbers is 405. The total amount of numbers is 15.
405/15 = 27.
Your average (mean) is 27.
The mode is the number that appears the most within the list of given numbers. 15 appeared the most.
Your mode is 15.
The median is the middle number of a list of numbers from least to greatest.
To do this quickly without any hesitation, we will eliminate the smallest number with the greatest number until we can no longer do so.
15, 15, 15, 19, 19, 22, 23, 24, 27, 30, 31, 35, 41, 44 ,45.
15, 15, 19, 19, 22, 23, 24, 27, 30, 31, 35, 41, 44.
15, 19, 19, 22, 23 ,24, 27, 30, 31, 35, 41.
19, 19, 22, 23, 24, 27, 30, 31, 35.
19, 22, 23 ,24, 27, 30, 31.
22, 23, 24, 27, 30.
23, 24, 27,
24.
Your median is 24.
The range is the difference of the largest number with the smallest number.
45 is the largest number, 15 is the smallest number.
45-15=30.
Your range is 30.
Hope this helps!
