Answer: 

Step-by-step explanation:
You could add up all the relative frequencies to make sure that you have 100% accounted for.
The relative frequency is the percent out of 100% for a particular item. If you have found the relative frequency for all items, it should equal 100%.
Answer:
the answer is on google
Step-by-step explanation:
Answer:
$0.07
Step-by-step explanation:
nails = 3.10/155 = 0.02/piece
screws = 7.65/85 = 0.09/piece
0.09 - 0.02 = 0.07
Answer:
27.77777...
Step-by-step explanation: