Answer: x=-6
Sorry, I am only able to find the x :(
Step-by-step explanation:
Step 1: Add -xy^3 to both sides.


Step 2: Add -5 to both sides.

Step 3: Divide both sides by -1.

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Answer: The standard error of the sample mean = 0.44
Step-by-step explanation:
Standard error of the sample mean =
<em> , where </em>
= population standard deviation , n= sample size.
Given : n= 45 ,
grams
The e standard error of the sample mean 

Hence, the standard error of the sample mean = 0.44
Answer:
Let H be height of a cliff
h depth of the pond
Total distance traveled (S)= H+h
S=20+13
S=33m
Step-by-step explanation:
Assume the longer piece is x feet long,
Then the other piece is 0.5x feet long
In total: x + 0.5x = 66 -> x = 44
So the longer piece is 44 feet, shorter piece is 22 feet