A group of 14 students plans to participate in a free-throw competition to see how long it takes them to make 30 free-throws. The dot plots show the data before and after training.

can i see a picture of the dot plots pls

Step-by-step explanation:

it would help

The mean time the students took to finish the 30 free-throws decreased by about 3 seconds after training.

Step-by-step explanation:

if you add up all of the nubers with the times   10+10+9+9+9+8+8+8+8+7+7+7+6+5

then divied  by 14

and you will get about 8

then you will add

8+7+7+6+5+5+5+5+4+4+4+3+3+2

and you will get68 than devide by 14

and you will get about 5  so than you will do

8-5 and you will get 3

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

21

jk it's 20

step-by-step explanation: