Y = X+4 &
y = 9
(solve for cordabate)

{y,x} = {9,5}

Step-by-step explanation:Solve the equation [1] y = 9

[1] y= 9

Plugs this in for variable y in equation [2]

[2]. (9) - x = 4

[2]. - x = - 5

Solve equation [2] for the variable x

[2]. X=5

By now we know this much

Y=9

X=5

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2

7 is the median   7.875 is the mean

step-by-step explanation:

3,4,5,6,8,11,13,13