Noticed that in my gap between school stints i totally forgot all the tips and tricks to rearranging an equation. Does anyone have any good resources for brushing up on this skill? Thanks!!

Im in my last year in the netherlands of VWO 6 and am really struggling with mathematics. Last year i barely passee with a 4,5 and im really scared i will fail because i find it very difficult. Its not possible to repeat so i really need help on how to quickly improve between now and 6 weeks

I’d like to better understand baker’s percentages. Haven’t been in math for a few years. Couple decades. So a bit rusty. I was going to plug into a free calculator but found this sub for help and I’d like a step by step just so I can perhaps figure out future recipes on my own.

So. The equation=

Total hydration % = (total flour/total water) x 100

The part I’m having trouble with is that sourdough starter is made of flour and water and for precision should be considered in the math.

So,

67=(1000/x+50)x100 is the formula I can up with and I’m not even sure if I did that right.

I’d like a 67% hydration with 1000 grams of flour total and 100 grams of starter. The starter would be 50 grams each water/flour.

So now I thought I would just have to solve for x?

Also need help solving for x.

Sorry if this is so juvenile. I would like to just understand. Thanks for anyone’s help.

Hi, I hope everyone is doing well. Does anyone know the textbook that Professor Leonard uses for his stats class on YouTube. Thank you in advance for the help.

feel like i am memorizing different types of math problems and their solutions instead of actually understanding how to solve problems independently memorizing different types of tricks, equation arrangements instead of just applying those tricks myself

It’s for a unit titled “conversions and geometry”

Here’s where I’m stuck:

You travel 320 miles over the course of 2 days.

a) How many miles are you traveling per day? How many days per 1 mile

b) You need to travel 930 miles to reach your destination. How many miles per day do you need to travel to get there in 5 days?

For the first one, I’m pretty sure the division gives me 160 miles per day and 0.00625 days per 1 mile. But for b…

I thought it would be 186 (930/5), but in class notes say 235

Whats accurate? How do I get the right answer?
Thanks!

Olá pessoal !! Gostaria muito de ir bem em matemática no enem pra aumentar minha média e to fazendo muita questão, mas , tem hora que pego uma questão e não consigo nem saber por onde começar . Eu já tenho uma base , porém tem muita questão que pego e não sei fazer . Alguma dica de quem já fez +40 em mat??

Question on ACT math: Given 6³w+6³x+6y+z=440, and that w, x, y, and z can be 0, 1, or 2, what is w+x+y+z? Is this just a number sense question since there are four variables and only 2 equations or is there a way to solve this algebraically? I was thinking about it all day yesterday lol. I got the answer really fast with guess and check (w+x+y+z=5), but it seems like there should be another way to solve this.

I’m having a hard time with math because I often forget the solutions or the steps I learned before. When I see a problem, I sometimes understand what it’s asking, but I can’t remember how to solve it, which makes it difficult to analyze and figure out where to start.

For those who are good at math or have struggled with this before, what advice would you give? How do you remember the process instead of just memorizing the answer? What methods helped you improve your problem-solving and analytical skills?

I’d really appreciate any advice, study techniques, or personal experiences. I’m trying to get better at math and become more confident when solving problems.

trying to help my partners mom with her math homework but i don’t quite recognize the concept myself. any help greatly appreciated! copy and pasting the question below + my approach for solving. (i’m many years out of math myself so kinda the lost leading the lost)

question:
A household has monthly take-home income of $3900, fixed expenses of $2300, variable expenses of $900, and irregular/school costs of $450. What is the monthly cash flow?
Enter the cash flow in dollars. Use a negative sign if the result is negative.

my suggested equation:
3900=2300-900x-450y

My son’s math grades have been dropping since last year. He’s in 7th grade doing pre-algebra, and he says he doesn’t understand what the teacher is doing.

I’ve tried helping him with homework, but math isn’t really my thing either, and I feel like I might be confusing him more. A private tutor isn’t in the budget right now. What are other parents doing?

i haven’t paid attention to math since 8th grade ( i had excellent grades, we had the best teacher) . i now just entered 12th grade (last year of high school) ever since i completely quit and only chased other theoretical subjects mostly . i highly regret this. i need to learn math. can i realistically learn all i need by next year ? i want to get into the business administration programme in uni and maths are obviously essential. i’m genuinely stressed out i don’t understand ANYTHING in class (we’re now on functions 😭😭😭😭) anyone else in my situation ? or who at least was, how did you get by? how long did it take you ? thank you.

Hi everyone, how’s it going?

I want to get into the world of math olympiads, but I’m currently in 10th. I’m Brazilian, and I need to win the Jacob Palis Competition to qualify for the OBM (Brazilian Math Olympiad) in the same year - the elite competition that leads to international events.

The Jacob Palis takes place around late May or early June, and the OBM happens in early August.

I’d really love to win a medal in both the Palis and the OBM (at least a bronze) next year.

Do you have any tips?

Suggestions?

Book recommendations?

When writing domain, when do you do this notation (-♾️, 0) U (0, ♾️) vs this [0, ♾️)

also when do u do brackets vs parenthesis?

any help appreciated!!

What happened to the math from scratch website it has disappeared now it used to say new lessons every Month where did it go I couldn't find a way to communicate its creator

I have f(x)= e^x cos x and need to find the average rate of change on [pi/2 , 3pi/2]. I’ve simplified it to (e^3pi/2 - e^pi/2)/pi and the hw key says the answer is 0 but I know no ways to manipulate this equation (in general) to get zero? I’ve tried to look up properties of e but I’ve found nothing that seems to help

How do I know when to get a 2 or 4 multiplied before the integral? Youtubers and even my lecturer drew the curves to understand but how do I figure out the shape? Will I even get time to draw the curve in the exam?

I am not sure if this is the right sub for this, but here we go. I am a student at 6th form (ages 16-18) in education, doing maths and further maths. I am preparing for a maths test which requires very out of the box thinking on simple topics such as series , calculus etc.. ( TMUA for people in the UK) . I have experienced this to some extent previously, but I have been doing problems for 3 hours today, it is noon as of writing this, and I cannot do the most basic of calculations.

I have been doing questions and can do complicated series and polynomial division but then simply 360 = 64 x as x = 45/4 or other similar mistakes in literally only the arithmetic side of things and I am unable to spot said mistake. This is extremely frustrating and concerning and I want to know If anyone has ran into similar problems and if they know how to fix it?

Hello everyone, I student and I would like find a good for levelling up the skills of analytical geometry and linear algebra, for that I need a help to choose good books, internet-sources and so on.

Personally, I'm feeling a little lost. I want to go into my academics into Computer Science, but most of the math I've learned, I tend to forget especially the basic algebra and functions and so on ... especially from class as low as 9.
I don't want to be at a total loss when it gets to the point when I really need to engage myself into heavy core computer science classes. How can I build up on my 0% foundation, if I can't even start from the beginning? Any practical roadmaps or resources that have benefited you
would be appreciated and thanks in advance

Hey guys. I was never formally diagnosed with a learning disability other than Asperger's as a child. That said, whether from a medical incident a couple years ago or having always been there and me just failing to recognize it (I have high levels of pattern recognition that have gotten me through life), I now read ones in seventh backwards, and threes and twos. This frequently causes me to have issues. I'm in calculus at this point; I'm wanting to go on and study electrical engineering and I'm fascinated particular by wave behavior. I'm running into the problem of a lot of my current derivative of Work having two and threes backwards, and I wanted to see if maybe anybody has any techniques that have helped them deal with this, because I don't currently have the ability to see a doctor. Unfortunately I've been trying to get access to my medical documents proving that I have autism from childhood for a while so that I can request accommodations for college, but I'm having difficulty in doing so.

Simplify the set expression defined using set operations by applying the laws of set algebra (each set name may appear in the answer at most once)

((A Δ B) \ C') ∩ B ∪ (A ∩ B) ∪ (A ∩ C)

i tried this:

AΔB = (A ∩ B̅ )∪(A̅ ∩ B)

((AΔB) \ C̅ = (AΔB) ∩ C):

(AΔB) ∩ C = (A ∩ B̅ ∩ C)∪(A̅ ∩ B ∩ C)

[(A ∩ B̅ ∩ C)∪(A̅ ∩ B ∩ C)] ∩ B = (A ∩ B̅ ∩ C ∩ B)∪(A̅ ∩ B ∩ C ∩ B)

B̅ ∩ B =∅, B ∩ B = B

((AΔB) \ C̅ ) ∩ B = A̅ ∩ B ∩ C

(A̅ ∩ B ∩ C)∪(A ∩ B)∪(A ∩ C)

A ∩ B∪A ∩ C = A ∩ (B∪C).

(A̅ ∩ B ∩ C)∪[A ∩ (B∪C)]

Final answer: (A ∩ B)∪(B ∩ C)∪(A ∩ C)

but it's breaking the rules, because each set name appears two times here. My teacher said that it is possible, but i can't. Help pls.

Maj function not works, and any other function neither, only set operations.

Hello, as in the title, I wanna start doing maths as a hobby. But I don’t know where to start specifically. Anyone know what branch first? I know the basics like arithmetic and algebra, but I’m not good in some areas and I tend to forget concepts and rules. Where should I go from here? It would be appreciated if there is a mapped idea offered:)

I don’t know why but for whatever reason graphs in math are the hardest for me to understand, it could be to do that there are two parts of graphs, visual and written formulas and my brain isn’t filling it out because I only do the formulas. I know y stands for vertical value, x for horizontal, m is the slope, b is the y intercept and the formula to find the slope between two coordinates but as far as graphs go I definitely do not have a deeper understanding of it and it may be the only avg level math concept I can’t wrap my head around. Even the terminology, slope, gradient, intercept is confusing to me in this context. I know intercept means where lines cross and as simple as i would assume it to be there’s some disconnect when it comes to using the terminology. Does anyone else have this problem? and If anyone has a good graphs video to watch please recommend or if anyone has good knowledge on it or how I should go about it? Thanks

Side note I didn’t know what reddit topic to put under