Milligrams, because you have more units
There are several information's already given in the question. based on those information's, the answer can be easily deduced.
a. It is already given that 1% are defective. It is required to find the number that is needed to be checked to get 5 defective products.
Then
1% of X = 5
0.01X = 5
x = 5/0.01
= 500
b. <span>σ = square root [(<span><span><span><span>n^2</span>−1)/</span>12]
= square root [(250000 - 1)/12]
= square root [249999/12]
= square root (20833.25)
= 144.34
= 144
I hope the procedure is clear enough for you to understand. I also hope that this is the answer that you were looking for and the answer has actually come to your desired help.</span></span></span>
<h2>answer:</h2>
There is only one sign changed in the whole equation so possibly the answer must be one. correct me if I'm wrong
Answer:
2 pieces
Step-by-step explanation:
Given


Required
Calculate the number of pieces
To do this, we have to divide the length of the wood by the length of each piece.
Represent this with x


Convert mixed numbers to improper fraction

Change division to multiplication



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Answer:
It will take 5.4 hour to paint 720 square feet
Step-by-step explanation:
The question should be like this"Andy painted 400 square feet in 3 hours. How long would it take him to paint 720 square feet?"
In 3 hours = 400 square feet is painted
1 square feet is painted in 
To find time to paint 720 square feet multiply the above term by 720 as follows :

So, it will take 5.4 hour to paint 720 square feet.