Answer:
20% of number 1 to 70 has one or nine in it
Explanation:
20% numbers from 1 to 70 have 1 or 9 in the unit's digit. 1,9,11,19,21,29,31,39,41,49,51,59,61,69 this is that series of numbers .These are total 14 numbers out of 70 so 14/70×100 gives us 20 % occurrence of 1 or 9 at unit place.
Answer:
I believe because some prats of south amsica where conceyed by different people Spain and proutugul and because of the different tribes of native poeple
Explanation:
True costa rica has many conservation programs
When the plates are moving, they go up against each other and go along each other and when a 'non-matched' piece comes, they hit causing an earthquake.<span />
