<span>spring constant = .50 / -.02 = -25
answer
-25 N/m</span>
Hello,
If there is a methode for dividing mixed numbers, i would like to see it
For me, european, 3&1/4=13/4
2&2/3=8/3
(13/4)/(8/3)=13/4*3/8=39/32=1&7/32
Answer:
A sample of 179 is needed.
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
.
That is z with a pvalue of
, so Z = 1.44.
Now, find the margin of error M as such

In which
is the standard deviation of the population and n is the size of the sample.
A previous study found that for an average family the variance is 1.69 gallon?
This means that 
If they are using a 85% level of confidence, how large of a sample is required to estimate the mean usage of water?
A sample of n is needed, and n is found for M = 0.14. So






Rounding up
A sample of 179 is needed.
Answer:
30 km
Step-by-step explanation:
1 kilometer = 100 meters.
1 meter = 100 cm
therefore, 1 km = 10,000
and then, 300000 cm is 30 km
I think it would have to be 1.46.
Explanation: if you subtract 3.56 from 2.1 you’ll get 1.46