If the mean of the following data is 14 then, find the value of a. 13,15,15,a,15,11

Step-by-step explanation:

Mean is calculated by total sum divided by number

14 = 13+15+15+ a+15 +11/6,

The missing value is given as a;

14 = 69 + a /6

We cross multiply:

69 + a = 14 x 6

69 + a = 84

Subtract 69 from both sides to get the value of a

69 + a - 69 = 84 - 69

a = 15

i have no clue at all sorry

step-by-step explanation:

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.