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laiz [17]
3 years ago
10

What what is the instantaneous velocity of the caterpillar at time t=6

Mathematics
1 answer:
vampirchik [111]3 years ago
6 0
This problem is in Khan Academy

In this graph the instantaneous velocity=decline.
You just have to do this:

And the answer is letter (A)

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Crop researchers plant 15 plots with a new variety of corn. The yields in bushels per acre are: 138.0 139.1 113.0 132.5 140.7 10
son4ous [18]
There is a relationship between confidence interval and standard deviation:
\theta=\overline{x} \pm \frac{z\sigma}{\sqrt{n}}
Where \overline{x} is the mean, \sigma is standard deviation, and n is number of data points.
Every confidence interval has associated z value. This can be found online.
We need to find the standard deviation first: 
\sigma=\sqrt{\frac{\sum(x-\overline{x})^2}{n}
When we do all the calculations we find that:
\overline{x}=123.8\\ \sigma=11.84
Now we can find confidence intervals:
($90\%,z=1.645): \theta=123.8 \pm \frac{1.645\cdot 11.84}{\sqrt{15}}=123.8 \pm5.0\\($95\%,z=1.960): \theta=123.8 \pm \frac{1.960\cdot 11.84}{\sqrt{15}}=123.8 \pm 5.99\\ ($99\%,z=2.576): \theta=123.8 \pm \frac{2.576\cdot 11.84}{\sqrt{15}}=123.8 \pm 7.87\\
We can see that as confidence interval increases so does the error margin. Z values accociated with each confidence intreval also get bigger as confidence interval increases.
Here is the link to the spreadsheet with standard deviation calculation:
https://docs.google.com/spreadsheets/d/1pnsJIrM_lmQKAGRJvduiHzjg9mYvLgpsCqCoGYvR5Us/edit?usp=sharing
6 0
3 years ago
Aiden borrows a book from a public library. He read a few pages on day one. On day two, he reads twice the number of pages than
Fofino [41]

Let the number of pages read on day 1 be = x

Then on day 2 he read twice the pages from day one, it is = 2x

On 3rd day he read 6 pages less than 1st day, it is = x-6

Total pages are = 458

The equation becomes: x+2x+x-6=458

4x-6=458

4x=464

x=116

So on the third day, Aiden read x-6=116-6=110 pages.

5 0
3 years ago
Where does the FDIC’s reserve fund come from?
stich3 [128]
B I think we’ll hope this helps
8 0
3 years ago
<img src="https://tex.z-dn.net/?f=%5Cfrac%7B%288%2Bn%29%7D%7B12%7D%20%3D1%5C%5C" id="TexFormula1" title="\frac{(8+n)}{12} =1\\"
m_a_m_a [10]

Step-by-step explanation:

  • 8+n/12=1
  • 8+n=12
  • n=4
  • Hence n=4
  • If liked then make me brainlist
3 0
3 years ago
An someone please solve this -18=m+12
DaniilM [7]

Answer:

m = ‐ 30

Step-by-step explanation:

it is because I say it is

5 0
3 years ago
Read 2 more answers
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