Number 12 what do you think we do first
The answer to your question is 20
Answer:
82 kg
Step-by-step explanation:
To find the mean of a set of values, we must add them up and divide by the number of values.
Step 1, adding the values:
![75+68+78+82+85+90+88+92+76=\\734](https://tex.z-dn.net/?f=75%2B68%2B78%2B82%2B85%2B90%2B88%2B92%2B76%3D%5C%5C734)
Step 2, dividing by the # of terms:
There are 9 terms in total.
![\frac{734}{9} =\\81.556](https://tex.z-dn.net/?f=%5Cfrac%7B734%7D%7B9%7D%20%3D%5C%5C81.556)
To the nearest kilogram, we can round 81.556 into 82.
The mean mass of the 9 men was
kg.
<em>I hope this helps! Let me know if you have any questions :)</em>
Answer:
b=-2aH
Step-by-step explanation:
H=-b/2a
Apply cross multiplication
H×2a=-b
2aH=-b
In the question you are to find positive b not negative b so you have to take negative b to the left hand side of the equation to become positive b and take 2aH to the right hand side to become -2aH
therefore b=-2aH