Answer:

Step-by-step explanation:
<em><u>Rules Used</u></em>



The answer is C. 3(y + z)
Proof:
y + y + y + 3z
Add same terms:
3y + 3z
Factor out 3:
3(y + z)
Answer:
$2.50
Step-by-step explanation:
to find the unit price you would divide it by 23
so 57.50/23=2.50
hope this helps
brainliest?
Answer:
The margin of error for estimating a mean μ is 1.1625.
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of
.
So it is z with a pvalue of
, so 
Now, find the margin of error M as such

So

The margin of error for estimating a mean μ is 1.1625.