Solved

Functions

Posted on 2016-08-31
7
54 Views
Last Modified: 2016-08-31
The first part of the solution is easy as its a simple plus , minus. But the next part where it uses some functions is hard. Can you please explain it in a different way.

screenshot.jpgscreenshot2.jpgscreenshot3.jpgscreenshot4.jpgscreenshot5.jpg
0
Comment
Question by:mustish1
  • 5
7 Comments
 
LVL 27

Assisted Solution

by:aburr
aburr earned 250 total points
ID: 41778431
If you are satisfied with the first panel of the solution, fine. It ends with
Yield = (300 -2(10) x (20 + 2)
What do the numbers mean? (explained in panel one).
 Note the 2. What is it?
It is the number of additional trees. You want to find the unknown number of additional trees wanted so call it x.
Replace the 2 with x. You get the equation at the start of panel 2. That equation is solved in the additional panels.
0
 

Author Comment

by:mustish1
ID: 41778441
I am not understanding that how it makes this function?

Then Yield =( 300 – 10x) (20 + x)=.......
0
 

Author Comment

by:mustish1
ID: 41778454
ok I understand this part. How the graph made based on quadratic equation?
a= -10
b= 100
c= 6000
0
Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

 

Author Comment

by:mustish1
ID: 41778462
Also next part where it says:  Complete the square to find the vertex of the parabola. Why not just use the quadratic function? How would I know to add 250 on both sides if i have similar question but different numbers.
0
 
LVL 14

Accepted Solution

by:
ThomasMcA2 earned 250 total points
ID: 41778567
At the beginning of the problem, you were shown what the yield would be for 1 or 2 additional trees.

For 1 additional tree: Yield = (300 -1(10))  (20 + 1)
For 2: Yield = (300 -2(10))  (20 + 2)

What's different between those two? Only the values of 1 or 2. So for an unknown number of trees, replace the 1 or 2 with an X to get your formula:

Yield = (300 -X(10))  (20 + X)

Then transpose that to get:

Yield = (300 -10X)  (20 + X)

Note that 250 was used merely to simplify the formula. The author skipped a step, which is causing your confusion.

They started with this:

-10X^2 + 100X + 6000

And then both added and subtracted 250, for a net change of zero:

-10X^2 + 100X - 250 + 6000 + 250

And then simplified that into:

-10(X^2 - 10X + 25) + 6000 + 250
0
 

Author Comment

by:mustish1
ID: 41778656
Yield = (300 -10X)  (20 + X)

can you please tell me how you get this equation
-10X^2 + 100X + 6000
0
 

Author Closing Comment

by:mustish1
ID: 41778659
I still need more practice. Thank You.
0

Featured Post

Highfive + Dolby Voice = No More Audio Complaints!

Poor audio quality is one of the top reasons people don’t use video conferencing. Get the crispest, clearest audio powered by Dolby Voice in every meeting. Highfive and Dolby Voice deliver the best video conferencing and audio experience for every meeting and every room.

Join & Write a Comment

Suggested Solutions

Title # Comments Views Activity
Logarithms 2 52
Dice Roll Probabilities 3 54
Triangles - Calculating angles 7 54
Homework Help 5 52
Finding a job can be stressful - searches, resume tweaks, and networking events can be super boring. Luckily we're here to help you land your dream job!
CSS is a visual language used to classify objects and define rules about how they should be displayed. CSS skills aren’t restricted to developers anymore, there is a big benefit to having a basic understanding of the language, regardless of your occ…
The Bounty Board allows you to request an article or video on any technical topic, or fulfill a bounty request to earn points. Watch this video to learn how to use the Bounty Board to get the content you want, earn points, and browse submitted bount…
Where to go on the main page to find the job listings. How to apply to a job that you are interested in from the list that is featured on our Careers page.

747 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now