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.

(b-20)/4

Step-by-step explanation: Liam has b beads. He gives 20 to his sister. That means he has b-20 left. He uses the remaining beads to make four equal necklaces. That means he has (b-20)/4 beads on each necklace.

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.