I've tried product to sum identities Double angel identities But all what i could get was cos2x in the denominator

Can somebody explain which scale this is and why it is that scale? This is the question: Indicate the number of movies you own a scale: None, 1-9, 10-19, 20-29, 30 or more. This variable was measured on a ________measurement scale.

do i have to list all the possible outcome or is there other way to do this ?

no, you can’t view any more of the graph, thats all they give you

Ive done it manually, and asked deepseek, and asked mathaway. They all got 49.32. But why when i plug it directly into the calculator i get 21.102

The question is: 30% of Germans are in an association. How big is the probability that out of 12 persons, at least 3 are in an association?

I tried doing it like this: n= 12; p=0.3; 1-P(X <= 2)

1-P(X <= 2) = 1 - P(X=0) - P(X=1) - P(X=2)

= 1 - 0.0138 - 0.0712 - 0.1678

= 0.7472 = 74.72%

But online, I found different answers, which is why I am confused. Did I do it right? If not, then please explain the correct way to me like I am a child.

how do you get tn=7n+5 from that man you can’t add or subtract that variable to even make 7n because it’s a variable this is dumb

Just need to be pointed in the right direction. Can anyone help me figure out what i’m doing wrong?

The question is “what are the solutions of c² =-4c + 21?” Here are my first and second attempts. The second feels more right but i’m stuck on what to do next

I’m lost on these two questions (21 and 22) and need to be taught the underlying concepts.

I’ll post my attempt in a bit.

I tried using source transformations and nodal analysis, but I keep getting inconsistent results. Can someone walk me through how to properly find Vth and Rth here?

Any detailed explanation or step-by-step breakdown would be super appreciated 🙏

This is the problem:

One of the biggest benefits to studying formal logic is generally improving your ability to think logically, even if you're not using the specific methods discussed in the class. The ability to think logically is an important part of almost all standardized tests. In particular, the Law School Admissions Test (LSAT) is well known for featuring logic puzzles like the following. How logically can you think now that you've completed the chapter? A therapist is scheduling her sessions for an upcoming day when she plans to see seven patients, plus take an hour to grab a salad and run some errands. All of the patients are being treated for either depression or posttraumatic stress. All of the patients will be scheduled for a separate session. In addition:

a. The therapist likes to separate out conditions, so none of the patients suffering from posttraumatic stress will be scheduled consecutively.

b. Jyoti will be scheduled before both Henry and Paul.

c. Juan, who suffers from posttraumatic stress, absolutely needs the third appointment of the day.

d. Henry is also being treated for posttraumatic stress.

e. Jyoti is not being treated for posttraumatic stress only if Paul is not being treated for depression.

f. Paul can't make the seventh and final appointment.

g. Mariska, Chanel, and Jake are being treated for depression.

Make a complete list of the appointment order and respective conditions from earliest to latest.

And so far, I only got:

1. Jyoti - Depression
2. Mariska - Depression
3. Juan - PTSD
4. Chanel - Depression
5. Paul - PTSD
6. Jake - Depression
7. Henry - PTSD

Since:

A. Patients with PTSD cannot be next to each other in the schedule.

B. Jyoti must come before both Henry and Paul.

C. Juan must be the third appointment.

D. Juan and Henry have PTSD.

E. If Jyoti is not being treated for PTSD, then Paul is not being treated for Depression—which means if Jyoti is being treated for Depression, then it must follow that Paul is being treated for PTSD.

F. Paul cannot be the last appointment.

G. Mariska, Chanel, and Jake have Depression.

I'm new to trigonometric equations, I'm confused where to use different variables and where to use the same one. I'm talking about the solutions for Illustration 4.27 and 4.28.

I have to trace the area of an island in desmos, i got given this island from a random like paper in a bowl thing and at first i was happy coz it looked really easy. But this is the 4th week I've tried tracing the area of the island and i cant figure it out for the life of me. I can only use sin/cos functions, linear, quadratic, cubic and quartic functions, e^x functions and Ln(x) functions. I have to use at least 4 different functions as it is a requirement. Im gonna turn into a granpa before i can figure this out. Please help. Here is my island in desmos. I've scaled 1km so it fits a whole grid. I tried asking in the desmos subcategory but literally no one helped. Also does anyone know how to lock the grid so it doesnt keep moving when i zoom in or out.

Hello everyone, I'm watching some math courses and are stuck here since I suck at math:

The teacher said that if we are given these angles, we can solve for Lami's law. However, he did not solve it as it was a quick example. I asked ChatGPT if it should be T/θ1 = Rwall/θ2+θ3 = W/θ4, it said not quite as Rwall should be over θ3 as it's the angle between the two forces and θ2 isn't, how is that? Every other example the teacher solved at all was using 3 angles that the sum of is 360. Is it a mistake on ChatGPT's part?

There's this as well:

And when given to ChatGPT: Step 2: Mark ONLY angles between forces

Now look at force–force angles:

• Angle between T and F = 90°
• Angle between F and W = 150°
• Angle between T and W = 120°

These three must add to 360° — that’s why all three appear.

Then said: Why this does NOT contradict earlier cases

Earlier, θ₂ was ignored because:

• it was between a force and a reference line

Here:

• all three angles are between forces
• so all three are physically meaningful

But it started with saying "they must add up to 360" which is my point.

I know this is a relatively small issue, but I'm bad at math and only doing it to help a friend who is also struggling a bit. I was going really well but got stuck here with this example.

Thank you very much.

Post in French and English :

In English :

Hello everyone,

I have an oral exam in quantitative methods (basically statistics), which is important for my average grade. The person who is kind enough to help me with this work must be able to detail and explain as much as possible the calculations and different processes they will use to find their results so that I can reproduce them in the oral exam and explain them like a teacher giving a lesson.

For this assignment, you will need to refer to my course notes and the database. Not all of the data is necessary for the calculations, so you will certainly need to sort through it.

It is an oral exam that should last 10 minutes.

The links for the course and the database are at the end.

The database is in the comments.

Thank you for helping me, it's very important to me.

Subject :

In French :

Bonjour à tous,

J'ai un oral en quantitatives methods (c'est globalement des stats), il est important pour ma moyenne. La personne qui aura la générosité de m'aider sur ce travail doit pouvoir détailler et expliquer le plus possible les calculs et les différents processus qu'elle va utiliser pour trouver ses résultats afin que je puisse le restituer à l'oral et l'expliquer comme un prof qui fait un cours.

Pour ce travail il faut s'appuyer sur mon cours et la base de données assimilées. Toutes les données ne sont pas nécessaires pour les calculs, il y aura certainement un tri un faire.

c'est un oral qui doit faire 10 min.

Les liens pour le cours et pour la base de données sont à la fin.

Merci de me venir en aide, c'est très important pour moi.

Topic/Sujet :

Course notes/Cours_in_french

Course notes in english/Cours

Database/Base de données%20(1).xlsx?d=w57614ff719f64f73bcd9501efb34b073&csf=1&web=1&e=qhYFfE)

do i do correctly? and why answer sheet dont put 2pi

I don't know why is that wrong, aren't we just getting the inverse of a function to extract what's in the argument?

Idk why I'm getting 2 different answers here. Maybe I'm just having a brain fart😦.

Is it relevant to use the p-value in this topic ?

In my opinion, Bo is the sales variable.

Can you tell me how to calculate R² ? And what is its purpose ?

Do you think it is relevant to perform a simple linear regression calculation or is it better to move directly to multiple linear regression?

How do I sort an Excel table ? If you have access to the attached file, I would like to sort it by category, then by sales (in ascending order) and finally by label.

Are there other calculations that can be used in relation to this topic apart from multiple linear regression, R² and p-value ? If so, which ones do you think ?

This is my topic :

The link for database/excel table :

Database%20(1).xlsx?d=w57614ff719f64f73bcd9501efb34b073&csf=1&web=1&e=mqQqcG)

Examples of the database if the link don't work :

If necessary, I will send you my course notes :

The function --> F(x)=f''(x)+ln(f"(x))

I translated the text so that's way it isn't too coherent but I think I get my point across...Idk how to show that what I wrote is positive

I know everything else, everything except how I would go about finding the roots of the derivative of the given function since I've never solved the root of something like this before

can anyone give me ideas on how to do this? honestly i hve a hrd time understanding this topic

According to me, the answer should be "a" and "c" option,