A. Find the mean, median, and mode of 12, 9, 17, 15, 10.
mean:
median:
6

Mean: 12.6

Median: 12

Mode: None

Step-by-step explanation:

To find the mode, add everything up.

12 + 9 + 17 +15 + 10 = 63. Then, divide by five.

63 ÷ 5 = 12.6

To find the median, put the numbers from least to greatest. Then, highlight the one in the middle.

9, 10, 12, 15, 17

To find the mode, look for the number that appears the most. Because each number appears once. So, put "none" in the box.

Have a wonderful day!

Mean: 12.6

Median: 12

Mode: No Mode

Step-by-step explanation:

First of all, put in ranking from smallest to largest.

9, 10, 12, 15, 17

Mean:

You add all the numbers up then divide by the amount of numbers.

9 + 10 + 12 + 15 + 17 = 63

5 numbers

63 / 5 = 12.6

Median:

What number is in the middle?

Because there's an odd amount of numbers, we can find the number in the middle. To do this you need to cancel out from the left to the right, until you get to the middle.

12

Mode:

For this you need to find a number that is recurring the most. But with the numbers that you were given here; there was no number that is repeated more than twice. So for this you would say 'No Mode'.

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

16.9 times 2.85

step-by-step explanation: