Question

the mean of a set of data is an average value of a data, suppose 12 years ago

Answer 1

its an triangle pic ABC NOT <ABC

Answer 2

If you have 3 numbers x,y,z, the mean is 1/3*(x+y+z) — add up the numbers and divide by the number of numbers, in other words.

Do the same with your x-coordinates from the triangle's vertices.

Answer 3

thass the thngs i dont know how to do all this. im not good at this questions

Answer 4

what are the 3 x-coordinates from the vertices?

Answer 5

"suppose <abc has vertices a(16,8), B(2,4),C(-6,12)"

A(16,8) x-coordinate =
B(2,4) x-coordinate =
C(-6,12) x-coordinate =

remember, it goes (x,y)

Answer 6

so i gotta devide this A B C by some number

Answer 7

first you have to identify the x-coordinates.

A is at (16,8). What is the x-coordinate of (16,8) if the numbers represent (x,y)?

Answer 8

idk?

Answer 9

If I tell you that you have (16,8), and the pattern is (x,y), which number is x and which number is y?

Answer 10

ohhhh. my b. well x is 16 and y 8?

Answer 11

yes!!!!!! :-)

Answer 12

Okay, so you need to find all 3 x values from (16,8), (2,4), and (-6,12). what are they?

Answer 13

x is 16, 2,-6 and y is 8,4,12??

Answer 14

correct again! Okay, what is the sum of the x numbers?

Answer 15

i add all the x and all the y's>

Answer 16

No, we are only adding the x's

Answer 17

ok

Answer 18

"find the mean of the x-coordinates of the vertices."

Answer 19

16 + 2 + (-6) = ?

Answer 20

its 12.

Answer 21

yes! And there are 3 numbers, so we divide the sum by 3. What is 12/3?

Answer 22

4