Its D because lets just say 1 ball steel is 10 grams so it be 80 grams total 14 -8 gives you 6 and they are 60 grams total.when you add the 60 and 20 grams you get 80 so its D
If the standard deviation for a set of data is 9.5. The margin of error is: 19.5.
<h3>Margin of error</h3>
Using this formula
Margin of error=Standard deviation×Mean
Let plug in the formula
Margin of error=205 × 9.5%
Margin of error = 19.475
Margin of error = 19.5 (Approximately)
Therefore If the standard deviation for a set of data is 9.5. The margin of error is: 19.5.
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The answer is B! Ive past my test for this task.
Answer:D) 1 hr
Step-by-step explanation:
Given
Pump A and B can fill tank in 
Pump A and C can fill tank in 
Pump B and C can fill tank in 
Let A be the total hr taken A therefore rate of 
Let B be the total hr taken B therefore rate of 
Let C be the total hr taken C therefore rate of 
-----1
-----2
-----3
Adding 1,2 & 3
thus time taken by A,B and C combined is 1 hr
