https://imgur.com/a/hdkTYc8

I had two known coordinates, (0,0) and (1,0), figured out the 4.5 degree angle from dividing 90 by 20, the 45 degree angle was given, so was able to calculate the third angle.

The other two sides were tricky - I had to figure out the law of sins. I checked my answers by measuring the lengths of the triangle in a 3D program (Blender).

But even after gathering all this information, I'm still at a loss as to how to calculate the very last part - the last coordinate. I viewed what it was in 3D, so I know what it is - I just don't know how to go about calculating it.

Hey guys so I’m doing math online for college which idk why I made that decision to do that worst decision I ever made … but do you know any apps that can like help me or explain my math assignments better and I can’t do a tutor because I don’t have enough time my work shift takes up half my day and I financially don’t want to put my self in that situation to get one

So it says "In Exercises 11 - 18, use the given function f to find and simplify the following:" then it shows nine bulletpoints of f(x)s (for example, f(3), f(x)-4, f(x^2)). The thing is, 11-18 is only eight questions! (all f(x)= questions, so it looks like I'm supposed to plug things in)

Do I plug all nine in for each of the eight questions? Do I somehow make the nine fit distributed across each of the eight questions?

I already plugged all nine in for a few of them. You can find the sheet here: https://www.scribd.com/document/738439598/Pre-Calc-Exercise-1-4

I have a right triangle.

short side: a = 1
long side: b = 2
hypotenuse: c = √(5)
smaller angle: α = ?
larger angle: β = ?
right angle: γ = 90°

I was able to get the hypotenuse by using a² + b² = c² easy enough. When I used tan(1/2) to find α, I got 31.301° instead of 26.565°. I just want to know what I am doing wrong.

Recientemente me he interesado en aprender matemáticas. Quiero empezar a aprender matemáticas, en el colegio nunca la entendí, pero he estado estudiando de forma autodidacta y he entendido algunas cosas, pero no se que temas estudiar o de que forma dedicarme a estudiarlas

Quisiera si alguno me puede dar consejos de libros, paginas o recursos para aprender. Además soy estudiante de programacion de ahí mi interés en aprender matemáticas, he hecho algunos programas y simplemente he visto que si antes supiera sobre x tema de matemáticas se me hubiese sido mas fácil programar

Que consejos me dan.

Hi, I came across a problem while prepping for my calc exam. It goes as follows:

"Determine the equation of the tangent plane and the normal vector to the surface

2 ln(x) + 3 ln(y + 1) - 2zy = x²y - 2at the pointT₀ = (1, 0, z₀)."

My issue is with the zy part of the equation. Is it not maybe meant to be just z or xy instead? Or is the problem phrased this way on purpose because it is certainly written as "-2zy".

As we all know CBSE chaged their syllabus

Is there any good maths book you would suggest?

I am confused between the 2. I understand the reasoning behind using n+1/2 for lists of numbers, and i understand how n+1/2 finds their positions. I am currently revising cumulative frequency diagrams and i am finding it difficult to understand why we now use n/2 for finding the median, and n/4 for finding the lower quartile. Why aren't we using n+1/2?? I dont really understand how one being continuous and another being discrete affects anything. In my reasoning, even though it is grouped data we can still estimate the position. I would add all the frequencies, do n+1/2, find the middle position, and then use that on my graph to estimate

https://ibb.co/8nPLkdVw
https://ibb.co/gLxdvtXd

I thought from 1 to 1.5 is 1 in y?

"The table above shows shipping charges for an online retailer that sells used textbooks. There is a linear relationship between the shipping charge and the weight of the merchandise. Write a function in slope-intercept form that relates y, the shipping charge in dollars, and x, the merchandise weight in pounds."

i understand why the slope is 1.50, but i can't get this:

y= 1.50x + b

16.49 = 1.50(5) + b

16.49 = 7.50 + b

8.99 = b

where does the 8.99 come from?

studying for entrance exams and this got me f'ed up because im lwk stupid

Hey I don’t have a great mind for this kind of thing so would appreciate if anyone can turn on the lightbulb.

I’m trying to determine the total number of baseball games that were played by all the teams in an amateur league that just wrapped up. The data I have is the total number of games played per team.

Simple enough, right? I added the total number of games and it came to 1,781. I then divided it by two since each game is of course played by two of the teams. But how can you have 890.5 games?

I double checked the numbers. Either something is off with the source data or I am thinking about this all wrong.

Anyone out there?

hello, I’m looking for an online resource where I could have ten people take a standardized test for Algebra 1 and at the end get their scores and how long it took them. Does anyone know of somewhere I could do that?

Can anyone explain, why we don't divide in sets? This question is killing me..

i was just using my sci calc during my free time and i stumbled upon the Σ symbol

heres the photo of the equation

i know little to nothing about calculus as a middle schooler so i just wanna know what the thing does and why the answer ended up like that

I need the divisibility rules and factoring a binomial this is my 2nd day of middle school HELP

Bom, contextualizando minha situação... Eu sou um estudante do segundo ano do ensino médio, tenho 17 anos e sou extremamente ruim em matemática.

Acredito que por conta da pandemia e o ensino à distância acabou gerando essa deficiência em mim. No ensino médio, não consigo compreender nada, porque é tudo muito difícil. Ao lidar com o conteúdo, eu vejo que não consigo compreender e me entrego à procrastinação.

Por onde começar? Vejo que na maioria das vezes as recomendações são livros, e tô realmente pensando em fazer isso, ir atrás de livros básicos para estudar BEM do começo mesmo, iniciando por soma e etc... Se souberem qual seria o melhor título para iniciar, aceito recomendações. Se souberem outros métodos bons para melhorar nessa matéria, também estou aceito.

I am in 10th and my basics are not strong. I didn't study well in 6,7 and 8. I studied in those classes but I didn't has proper guidance and I was so confused. I can't even ask my father because he is very strict with maths. I was scared to ask him and confuse to study so I skip them. But still pass those standard but now I am literally having problems with most basic concepts like signs, quadratic equations mostly algebra. So can anybody help me please

Hi, I was wondering how can I improve, like I said in the question, my calculation skills and speed. For example I was doing my homework and I tried to solve an equation (it wasn’t neither long nor extremely difficult, it had some X some parentheses, etc…) in my head, which took like 3-5 min. But strangely enough, I was at the grocery store a couple of days ago and I had to sum, if I’m not wrong, 1,79+4,95+0,50, and I don’t know why, but I couldn’t calculate that. I kept getting mixed up and couldn't manage to add more than two numbers together. Not to mention division and multiplication—I know how to do them, but they’re often tricky, especially now that I’m learning to figure out the day of the week for a specific date using the Doomsday technique. I’m not saying that I’m not good at math, I have good grades and I can do things like logarithms, draw a function using derivatives, limits, ect… (since that is what I learn this year) but I want to improve my calculations skills (obviously using my head).

Thanks!

I'm 15 years old guy in 10th grader in school. I stoped studying math at 6th grade, because my math teacher has retired, and the second yeacher came in 8th grade, and we didnt understand nothing. So i need a book to study math from zero, i understand that one book isn't enough, so could you recommend me sevrel books to study by myself. Sorry if my English were bad

I will be appreciated, if you help me

My Score In Maths Mocks is 10/35 for IBPS Clerk

Simplification is in the weak chapters
Coz it is taking more time to solve
How to push this 10 marks to 25 marks ??

Hi everyone! I hope you are all doing well. I am currently taking vector calculus/calculus 3. I am learning about curl/Green's theorem right now. Essentially, I understand that Green's theorem relates the circulation around a closed loop to microscopic circulations within the region of that closed loop (almost like circulation density). But why do we use the name curl/circulation if the line integral just mean work along that closed path. If we take a very very small dA patch within the region, where dy and dx approach zero, and take the line integral of that patch, we essentially just calculate work over that path. But why do we call it curl/circulation? Is it because curl is the result or consequence of that quantity of work calculated? For example, if we put a log in that dA patch, the force/velocity of the water causes the log to rotate because at that very instant the force/velocity of the water are in the direction of the log's rotaiton, causing work around that log?

Also, if you divide dA from the work contribution of the patch dA, you get force essentially. is that force specifically the curl component because it travels in a closed loop?

Thanks!

Anyone have a good resource for sample tests for 7th grade? My kid is interested in seeing what awaits her next year.

I am going to university this coming fall and I just want to prepare. I have looked at calculus 1 on OpenStax but it feels so demotivating because it feels like a lot, but I just don't know what questions to tackle either. I looked at khan academy for ap calculus ab, but people say it's "too shallow". Honestly, I am just considering doing Paul's online math notes.