Hello,
Angles y and 3y+8 are supplementaries since the quadrilater is inscribed
y+3y+8=180
==>4y=172
==>y=43 (°)
        
             
        
        
        
Answer:
30 grams
Step-by-step explanation:
half life is 60 days so every 60 days the amount 480 grams will be half 
in 240 days will decay  240 /60 = 4 times 
once 480 /2 = 240
twice 240 /2 = 120 
trice 120 / 2 = 60 
four times 60/2 = 30 grams will be left 
 
        
             
        
        
        
make the y int -4 because it passes through (0,-4). to make perpendicular, apply same slope to new equation but change sign
 
        
             
        
        
        
Answer:
Step-by-step explanation:
the fraction is  right, but notice that the numerator and denominator are both divisible by 16.
 right, but notice that the numerator and denominator are both divisible by 16.
64 divided by 16 is 4,
80 divided by 16 is 5.
