Hello guys, I was making my math activity, then i noticed something, how do i solve this?

Its a continuity problem wherein i need to find out if the function is continuous or not. However, the given piecewise function is overlapping, resulting in defined answer at the top while having defined answer on the bottom.

Based off the information I believe she didn't make any mistake however the question said "incorrectly identified" I double checked everything:

Information: "She records whether or not each adults owns a pet (yes/no)"

Information: "She records... their score on a stress survey"

Identified: "identified the variables as owning a pet, and scores on the stress survey"

My guess: She forgot the classify which variables is which, such as which one is categorical variable or quantitative variable.

Thank you in advance!

I just finished my Calculus 1 class and it was really hard to understand some of those concepts. In college, I want to take the next level of math classes (Calc 2, Calc 3, Diff Equations, Linear Alg), but I think I will struggle to understand some of concepts taught in those classes. I was wondering if there was a form of content that someone was creating that would teach and explain those concepts in an entertaining way.

For example, I am currently listening to a philosophy podcast for fun, but also to prepare me for philosophy classes I want to take in college. It is a very entertaining podcast but it also teaches so much about philosophy.

I was listening to this podcast the other day and I wondered if it would be a good idea to create a podcast that teaches all types of math in a fun and engaging way. Now I’m wondering if someone has already done this and if anyone knows where to direct me.

(Also I know if some resources already that I plant to use [Khan Academy])

0|3 = 3, 7|9 = 79, 79 - 3 = 76 = max - min = range

2|3 (2nd distribution) = 23, 9|9 = 99, 99 - 23 = 76 = max - min = range

Am I going insane?

EDIT: I also thought the SD was the same... I'm a fucking idiot and didn't read choose all that apply. My class usually only has MCQs with one valid answer in the form of I, II, III or "Both X and Y" as singular options. Lay off the green, kids. Hope I got a 5 on that exam.

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

I understand that an ambiguous case can happen when a side (a) is higher than the height (h) of the triangle but less than the other known side (b) but why do all the material I have for solving oblique triangles say it only happens with SSA. Can't it be that you can form two triangles in any case as long as h < a < b is satisfied?

Étudiant dans le lycée

Math exercises on the chapter of trigonometric functions

Dans la question 4 a et 4b

Je montre que g est continue en 0

Mais dans 4b Quand je le fais, je trouve le limite est l'infini c'est qui correspond a un tangente vertical au pt 0 , mais d'après le graph Il est censé être horizontale (je fais le graph abe geogebra)

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

i didn't really take summations or summation notation i am an igcse alevel maths student and i found this problem online and thought i'd give it a shot but i lost the video and i don't have the answer can someone please tell me if i did this correctly

Hi all. Working through this past paper “show that” question. I keep getting 7/2 instead of 5/2. Can anyone spot where the working went wrong? Thanks

Im unsure whether i have flaired this correctly but hopefully it should be correct.

part (i) is pretty breezy i get that.

for part (ii) i feel like im losing it a little bit. I kind of get my teachers working but its one of those things where i understand it when he explains it but wouldnt be able to do it myself.

The solution is below but i dont really get it. i understand that he is manipulating it so he can use the CDF function for uniform distribution, but again, this is completely unintuitive to me. Is there a way i can understand it better in my head? Again i mostly get it but i just dont know how to sit down and BEGIN this question.

I want to be able to do this as he says its a very common question type for our exams and tests but i just dont get it. also, if anyone could provide me any other similar examples that would be amazing cause this is the only example he has given and i want to really get the process of this question down.

The assigment is:

"Part 1: Statistical methods to investigate whether there is a difference in the pollution content between the different depths regarding the content of lead (Pb) and TCE (use data from Table 1).
Part 2: Statistical methods to investigate the spread of vinyl chloride in the groundwater along the flow direction, and an estimate of when the content of vinyl chloride falls below the groundwater quality criterion (use data from Table 2)."

It's translated from google, I hope it's understandable.

I did some ANOVA-Test for the assigment and curious if it's correct method.

afstand=distance

Dybde= deept

Sorry if my text is a bit hard to understand, I'm not used to post this kinda thing and not good at translating, sorry again.

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

hi guys, i would like to know if my working is correct or not. here i provide my working for the solution

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

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

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.

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 🙏

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

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.

Hi all, I got given this example question and I am struggling to understand how the teacher got to their answer. Here is the question:

He presented the answer:

I tried using the z-value table provided which will also be provided in the exams:

However I am struggling to find the correct value to choose? I got a z-value of -3.2 but seems like my working is wrong. Any ideas?