Answer:
x=4
Step-by-step explanation:
3/2.(x-6)=-3
x-6 =-3:3/2
x-6 =-2
x =-2+6
x =4
8 is the mean it is easy 5,7,8,10,10 cross both sides off till you get the mean which is 8
We know that :

From the figure, We can notice that :
Ф Adjacent side length = 8
Ф Hypotenuse length = 11



F(-10) means the x value in the equation is -10.
Replace x with -10 and solve:
4(-10) -12 = -40 - 12 = -52
F(-10) = -52
<BAC = <DEC = 30°
<BCA = <DCE = 70°
<CDE (or m<D) = 180° - <DEC - <DCE
<CDE = 180° - 30° - 70°
<CDE = 80°
The number that belongs in the green box is 80