Ineed with find the mean of the following data: {17, 20, 14, 5, 30, 13, 6, 15} 5. find the median of the following data: {17, 20, 14, 5, 30, 13, 6, 15} 6. what is the mode of the following data: {5, 17, 4, 12, 8, 4, 6}

Mean- Average of numbers

17 + 20 + 14 + 5 + 30 + 13 + 6 + 15 = 120

There are 8 numbers in the data set so 120/8 = 15

So the mean is 15.

Median- The middle number

To find the median you have to place all the numbers in order from least to greatest.

5, 6, 13, 14, 15, 17, 20, 30

The 2 middle numbers are 14 and 15.

Since there are 2 middle numbers you have to add them and then divide them by 2.

14 + 15 = 29/2 = 14.5

So the median is 14.5.

Mode- The number that occurs most often

5, 17 , 4, 12, 8, 4, 6

The number that occurs the most is 4.

So the mode is 4.

Hope this Helps!!

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!