7-6x you are multiplying what’s in the () then comparing like term
Answer:
Learn how to find explicit formulas for arithmetic sequences. For example, find an explicit formula for 3, 5, 7,... ... CCSS Math: HSF. ... plug in the number of the term we are interested in, and we will get the value of that term. ... Writing explicit formulas ... Check out, for example, the following calculations of the first few terms.
Step-by-step explanation:...
Answer:
D
Step-by-step explanation:
Answer:
The 90% confidence interval for the population mean iron concentration is between 0.167 cc/m³ and 0.195 cc/m³.
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 M as such

In which
is the standard deviation of the population and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 0.181 - 0.0140 = 0.167 cc/m³.
The upper end of the interval is the sample mean added to M. So it is 0.181 + 0.0140 = 0.195 cc/m³.
The 90% confidence interval for the population mean iron concentration is between 0.167 cc/m³ and 0.195 cc/m³.
Answer:
8%
Step-by-step explanation:
70.20−65.00=5.20
(5.20/65.00)×100=8