Dan spent half of his allowance going to the movies. he washed the family car and earned 9 dollars. what is his weekly allowance if he ended with 14 dollars?

6 meters

step-by-step explanation:

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.