Helen has some pens and some square tiles .each pen is 130mm longet . the sides of each tile are 13mm long . helen lays ten pens end to end to make a straight line . she makes a line of tiles which is the same length as the line of pens . how many tiles does she use?

100

Step-by-step explanation:

The total length of ten pens laid end-to-end is

10 pens × 130 mm/1 pen = 1300 mm

The number of tiles needed to stretch the same length is

1300 mm × 1 tile/13 mm = 100 tiles

Helen uses 100 tiles.

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )

what do u need to know

step-by-step explanation: