Let the required weight be X, then
z = (X - mean)/standard deviation
2 = (X - 16)/1
X - 16 = 2
X = 2 + 16
X = 18 oz.
By def. of the derivative, we have for y = ln(x),



Substitute y = h/x, so that as h approaches 0, so does y. We then rewrite the limit as


Recall that the constant e is defined by the limit,

Then in our limit, we end up with

In Mathematica, use
D[Log[x], x]
6 cups of flour is needed for a big batch of cookies that uses 9 cups of oatmeal
Step-by-step explanation:
For 3 cups of oatmeal 2 cups of flour is required.
We need to find how much flour is needed for 9 cups of oatmeal.
Solving by using Unitary Method
3 cups of oatmeal require flour = 2 cups
1 cup of oatmeal require flour = 
9 cups of oatmeal require flour = 
= 
So, 6 cups of flour is needed for a big batch of cookies that uses 9 cups of oatmeal
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