Answer:
x=3/22 ; y=-9/44
Step-by-step explanation:
 1/2x+1/3=4
=>1/2x=4-1/3
=>1/2x=(12-1)/3
=>1/2x=11/3
=>22x=3
=>x=3/22....(1)
then,
3x+2y
2y=-3 . (3/22) 
y=-9/44
 
        
                    
             
        
        
        
Answer:
x=6/25      or     decimal = x=-0.24
Step-by-step explanation:
 
        
             
        
        
        
Answer:
32,768.
Step-by-step explanation:
There are 12 lots of 5 minutes in 1 hour.
The equation  is 8*(2^12)
= 8 * 4096
= 32,768.
 
        
             
        
        
        
Answer:
57cm²
Step-by-step explanation:
area for trapezoid= 
b¹+b²=x
x÷2=v
v×h=z
h=height 
b=base
14+5=19
19÷2=9.5
9.5×6=57
 
        
             
        
        
        
1) -30 meters because descend means decrease
2) 20 meters because above means positive
3) 0 because it does not change
Hope this helps!