Yoko sells beaded necklaces. Each large necklace sells for $5.10 and each small necklace sells for $4.80. How much will she earn from selling 1 large necklace and 7 small necklace?

$38.7

Step-by-step explanation:

4.80 x 7 = 33.6

33.6 + 5.10 = 38.7

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.