anonymous
  • anonymous
Assume that the following data was collected for a chemical reaction where reactants A and B are reacting to form products C and D. As the products are formed, we measure their masses. You will be graded on both the accuracy of your work and the quality of your written communication.
Mathematics
  • Stacey Warren - Expert brainly.com
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
a) What is the equation for the model of best fit? Illustrate your process carefully. Find out from your instructor how to submit your calculator screens. b) What does your model predict would have been the amount present at 5 minutes? c) At what time would 25.1 grams be produced, according to your model? d) Are the products formed at a constant rate over time? Explain.
undeadknight26
  • undeadknight26
I'm lost sorry m8
anonymous
  • anonymous
All good m8 @undeadknight26

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More answers

TheSmartOne
  • TheSmartOne
since you asked for QH help, let the QH's help @dan815 @nincompoop
dan815
  • dan815
what grade are you in?
anonymous
  • anonymous
@dan815 senior in high school
dan815
  • dan815
okay graph your points and u will see it has an exponential fit
anonymous
  • anonymous
Yes I see that
dan815
  • dan815
okay you're going to think about your own ways to come up with what exponential curve you will use, so you can talk about how to arrived at it
anonymous
  • anonymous
what about b)?
anonymous
  • anonymous
Help anyone
anonymous
  • anonymous
@dan815
ganeshie8
  • ganeshie8
Hi!
anonymous
  • anonymous
Hi @ganeshie8 can you be my savior?
ganeshie8
  • ganeshie8
I'm not so sure, do you mind sharing some more info, like, the course/module name and if you have any worked example problem that would really help!
anonymous
  • anonymous
It's AP stats and power models. I'm sorry I don't have an example at this time
ganeshie8
  • ganeshie8
Ahh then it is easy, have you plotted the given points ?
anonymous
  • anonymous
Yes I have
ganeshie8
  • ganeshie8
did you get the power model equation from ur calculator ?
ganeshie8
  • ganeshie8
we need that for part b, so please share the equation
ganeshie8
  • ganeshie8
what ever the equation is, for part b, you simply need to evaluate the function from part a at \(x=5\)
anonymous
  • anonymous
Right I'm trying to figure the correct equation now. Unsure how to get it in proper form
ganeshie8
  • ganeshie8
Look at the scatter plot and decide on the model first : |dw:1438329230945:dw|
ganeshie8
  • ganeshie8
pick one of below two : |dw:1438329385821:dw|
anonymous
  • anonymous
Exponential regression
ganeshie8
  • ganeshie8
good, work part \(a\) again, because your equation is way off the given data points
anonymous
  • anonymous
How do I even rework or find out the equation when I have no idea what a or b is
ganeshie8
  • ganeshie8
you have worked the part \(a\) already right ?
ganeshie8
  • ganeshie8
my calculator gives below equation for part \(a\) : \[y = 2.43*(1.16)^x\] you should also get something close to that
ganeshie8
  • ganeshie8
|dw:1438330415594:dw|
Jhannybean
  • Jhannybean
Such a beautiful graph
anonymous
  • anonymous
Yes! I can now calculate b c d Thank you @ganeshie8 I was able to finally able to get it and answer these questions with your help I have one more problem which is somewhat similar and has been
anonymous
  • anonymous
A somewhat similar problem that has been bothering me, do you have the time to assist if I start a new thread?
ganeshie8
  • ganeshie8
I'll try, you may ask it here..
anonymous
  • anonymous
Many wildlife populations are monitored by taking aerial photographs. Information about the number of animals and their whereabouts is important to protecting certain species and to ensuring the safety of surrounding human populations. In addition, it is sometimes possible to monitor certain characteristics of the animals. The length of an alligator can be estimated quite accurately from aerial photographs or from a boat. However, the alligator's weight is much more difficult to determine. In the example below, data on the length (in inches) and weight (in pounds) of alligators captured in central Florida are given. Develop a model from which the weight of an alligator can be predicted from its length.
1 Attachment
ganeshie8
  • ganeshie8
As usual, start by plotting the given data points and decide on which regression model to use
ganeshie8
  • ganeshie8
Notice that weight is dependent variable here, so it goes in y axis and length along x axis.
anonymous
  • anonymous
Here is the plot
anonymous
  • anonymous
this also appears to be exponential regression
ganeshie8
  • ganeshie8
Yes, I think so.. my calculator gave this equation for exponential regression : \[y=3.8*(1.036)^x\]
ganeshie8
  • ganeshie8
From the model it seems the weight is increasing by \(3.6\%\) for every \(\text{one inch}\) increase in the length
anonymous
  • anonymous
Thank you very much for your help @ganeshie8 . Truly an experienced and kind math wizard! Appreciate your help so much!
ganeshie8
  • ganeshie8
np :) when you're free and if you're interested, check out this mooc course from coursera https://www.coursera.org/course/apstat it is free and might help with your preparation!
Astrophysics
  • Astrophysics
ganeshie what program did you use for that graph, geogebra?
Astrophysics
  • Astrophysics
program/ site
ganeshie8
  • ganeshie8
Yes, it has this spreadsheet feature which is really cool for regression stuff http://prntscr.com/7z5iqp
Astrophysics
  • Astrophysics
That's sick, thanks

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