<span>valid. She used a representative sample
</span>because she correctly found the average and 18,000 is a reasonable number to get for a the problem
Answer:
0.5239 would round to 0.52
3,204,887,219 would round to 3,000,000,000
Step-by-step explanation:
Answer:
,
, 
Step-by-step explanation:
these are all irrational! hope this helped you :3.
-2 - 3 = -5
The answer is negative 5.