Answer:
$4.18
Step-by-step explanation:
You take $3.80 and multiply by it .1 (turn 10% into a decimal by moving the decimal to the right two places). 
This gives you .38 
Then you add .38 to $3.80 which gives you $4.18. 
 
        
             
        
        
        
Answer:
um i don't know this (i do im just lazy as heck)
Step-by-step explanation:
 
        
             
        
        
        
BRO I am to we just can’t do maths
        
             
        
        
        
Answer: 0523 i think this the answer i don't know
Step-by-step explanation:
 
        
                    
             
        
        
        
M<A = <span>20°
m<B = m<C = 8</span><span>0°
</span>Law of Sines , in any triangle we have
a/sin A = b/sin B = c/sin c<span>
4/sin20 = AC/sin80 = AB/sin80
now we can solve AC
</span>4/sin20 = AC/sin80
<span>AC = 4 (sin80)/ sin20
AC = 4(0.98) / (0.34)
AC = 3.92 / 0.34
AC = 11.52
answer
</span>C.11.52 centimeters<span>
</span>