Liam has a bag of b beads. He gives 20 beads to his sister. He then makes 4 necklaces with the same of beads on each necklace using all of the remaining beads. Write an expression that represents the number of beads on each necklace. Show your work. * Tip: Use this symbol (/) to show division

(b-20)/4

Step-by-step explanation:

She had b beads initially and gave 20 to his sister;

what he would have now will be;

b - 20

So he made 4 beads with the remaining

To know the number of beads on each of the four , that will be dividing the number of beads we have left by 4

Mathematically;

that will be ;

(b-20)/4

the answer is  

a.

4,624π mm2

step-by-step explanation:

step-by-step explanation:

a'(12.5,11.25)

slope=(y1-y2)/(x1-x2)