The average height of 4 children is (15h-3). two more children join the group with heights of (10h+46) centimeters and (14h-16) centimeters. find the average height of the 6 children if h=9

123.5 centimeters

Step-by-step explanation:

Let sum of observations be S and number of observations be n.

Average A=

The average height of 4 children is (15h-3)

Also, when two more children join the group with heights of (10h+46) centimeters and (14h-16) centimeters the sum of heights of 6 children will be

Now, Average height of 6 students=

At h=9

Average height of 6 students=

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150

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.