He needs 18.5 <span>meters of streamers
Just divide 1,850 by 100...
...and you'll get 18.5</span>
The missing length is 12km (i never promised anything xd)
Consider this option:
1. formula of perimeter is: P=2(a+b), where a & b - the sides of rectangle.
2. according to the condition 2(x+(x+4))<120; ⇒ x<28
answer: D. x<28
First arrange numbers
14,15,15,17,19,20,21,23,24
19 is median
15+15/2=15 is first quartile