The heights of six students in a class are given below: 158cm 172cm 164cm 164cm 167cm 159cm However, there were actually seven students in the class, and the mean height in the class was 164 cm. What was the height of the unknown student?

my acc plz

step-by-step explanation:

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

move it to the other side

step-by-step explanation:

let's fu(!

step-by-step explanation: