Answer:
3x + 4 = 12 :- x = 8 / 3
Step-by-step explanation:
 3x + 4 = 12
Move all terms not containing x to the right side of the equation.
Subtract 4 from both sides of the equation.
3x = 12 - 4
Subtract 4 from 12.
3x = 8
Divide each term by 3 and simplify.
Divide each term in 3x = 8 by 3.
3x / 3 = 8 / 3
Cancel the common factor of 3.
Divide x by 1.
x = 8 / 3
The result can be shown in multiple forms.
Exact Form:
x = 8 / 3
Decimal Form:
x = 2.6
Mixed Number Form:
x = 2 2/3
 
        
             
        
        
        
Answer:
y=-6 that would be it. remember slope is rise over run 
 
        
             
        
        
        
Hey there!
A quadrilateral has 360 degrees. So add all the degrees together to 360. 9x+1+5x-12+8x+61+90=360. 90 degrees is in the bottom left corner. Combine like terms. 22x+140=360. Subtract 140 from each side. 22x=220. Divide 22 on each side to get x=10. Plug in 10 for x in angle D. 5(10)-12=38. The measure of angle D is 38 degrees. 
I hope this helps!
        
             
        
        
        
Step-by-step explanation:
7^3 × 7^(1÷2)
= 7^(3+ 0.5) 
=7^3.5 ans