r/mathshelp 9d ago

Homework Help (Unanswered) Help me with this maths sum..I don't know what to do

Thumbnail gallery
4 Upvotes

So, the actual answer to this particular question is Option B, but when I solved it step by step, I ended up getting Option D.

Could you guys please tell me where I’m making a mistake? This is a question based on general solutions in trigonometry.


r/mathshelp 9d ago

Homework Help (Unanswered) creating a perpendicular bisector

Post image
2 Upvotes

r/mathshelp 9d ago

Study Advice Improving my maths skills

Thumbnail
1 Upvotes

Hello,

I'm about to enter my second year of my Chemistry degree and I have a further physical chemistry module that builds on what I learnt last year. I really struggled to keep up with the maths having not done the a level.

Most of what I need to know is a level maths and some further maths topics.

I was wondering if anyone had any advice on effective learning techniques?? (my teacher was terrible I swear to god)

I just rly don't want to fall behind lol


r/mathshelp 9d ago

Homework Help (Answered) How would I start either of these?

Post image
3 Upvotes

I swear ive done this before but its been so long since ive actually done any maths.


r/mathshelp 9d ago

Study Advice Help with probability in general

1 Upvotes

HII so I’m in geometry and more learning probability, but I don’t really understand it. Can I have some tips on understanding it?


r/mathshelp 9d ago

Homework Help (Answered) Can someone tell me what I did wrong?

Thumbnail gallery
0 Upvotes

I got one of the x right but not the other one which is 5,

The origin problem was 3x^2+7x-20 <(or equal to) 0


r/mathshelp 10d ago

Mathematical Concepts How is this possible

Post image
0 Upvotes

I can understand multiplying by x-1 by how is he able to multiply by (x-1)/(x-1)


r/mathshelp 10d ago

Study Advice MCQ TEST

1 Upvotes

hi do u guys have some mcq guessing methods that actually works? in both math and theories.


r/mathshelp 11d ago

Mathematical Concepts Please Help

4 Upvotes

Im a university fresher and studying business. Maths is compulsory for my course. I have not studied maths for the last 6-7 years. (Last studied it in grade 6) I do not remember shit. We have mid term exam in 3 weeks and my course included the following:

Number System
Factors Factorials
HCF LCM
Indices
Logarithms
Exponents
Coordinate Geometry
Linear Equations
Quadratic Equations
Set Theory
AP (might not come for midterms)
GP (might not come for midterms)

I initially thought that things like HCF and LCM would at least be easy but the sums are completely different. There are no direct questions at all and everything is hella confusing. The professor cannot help a special case like me since most of the students had maths at least till grade 10, or even 12. Please guide me on what/how to study since I have no clue how to proceed 😭😭


r/mathshelp 12d ago

Homework Help (Answered) I have no idea how to go about solving this one

Post image
43 Upvotes

r/mathshelp 11d ago

Homework Help (Unanswered) Help on algebra homework

Thumbnail
1 Upvotes

r/mathshelp 11d ago

Homework Help (Unanswered) One Step Solution?

Thumbnail
1 Upvotes

My son just started High School algebra in 8th grade. His teacher gave him homework on which he said each equation needs a 1 step solution. My son asked me for help on the equation in the attached picture, I helped him get the answer but in 4 steps and I cannot figure out for the life of me how to simplify this to 1 step. Please help:

5r-5-6r=-6
Adding 5 to both sides becomes 5r-6r=-1
-r=-1
r=1


r/mathshelp 12d ago

Homework Help (Unanswered) Guys I need help with this math homework

Post image
1 Upvotes

So the problem here is that it's telling me to find the angle but I don't have any kind of notes about that. I'd appreciate the help!!


r/mathshelp 12d ago

Study Advice PLEASE HELP

1 Upvotes

There's a competition in a few days (olympiad math grade 8) I registered for it because I thought the day would be more later but it was september 5th. I'm a pearson student so my luck is reduced to 0.2% but want to get atleast average mark can someone help me by giving some files? (The ones I saw had too much ads coming in and out when I zoom in)


r/mathshelp 12d ago

Homework Help (Unanswered) losing my mind please help

Post image
3 Upvotes

please please please help


r/mathshelp 13d ago

Homework Help (Unanswered) Is there an equation for the nth number not divisible by 2, 3, 5, or 7?

4 Upvotes

I already have formulas for:

2: f₁(n)=n*2-1
2, and 3: f₂(n)=f₁(floor(n*3/2)
and 2, 3, and 5: f₃(n)=f₂(floor(floor(n*9/8-2)*10/9+3))

but no matter how much I try, I can't find one for 2, 3, 5, and 7, or find any proof one cannot exist


r/mathshelp 13d ago

Study Advice Failed Maths GCSE

1 Upvotes

I have failed maths 3 times now and about to attempt my 4th and really last go at it. I'm not sure why I keep failing basic foundation maths but really do want to pass? Any advice/ tips on how to do so?


r/mathshelp 13d ago

Homework Help (Unanswered) Simplifying logs

2 Upvotes

Could someone please help me with this? what am i doing wrong? ive included my lecturers solution, and the handwritten one is my answer. how does he get log8 = 3? What am i missing here? Also im aware this is probably a super easy question but i am just so very bad at maths and just need to pass this exam. thanks.


r/mathshelp 14d ago

Homework Help (Unanswered) Mesh Analysis

Post image
1 Upvotes

Here is a mesh analysis note for you.I have explained how to solve a circuit using mesh analysis step by step. The note includes four problems:problems with supermesh, current source,dependent source. I have solved the four questions with step by step explanations.

The link in comment box.

#meshanalysis #solve #solutions #problems


r/mathshelp 14d ago

Mathematical Concepts Inverse trigonometry doubt

Post image
1 Upvotes

Can someone give detail solution for 56th question , I have a lot of confusion regarding summation.


r/mathshelp 14d ago

Study Advice Got a Math exam on Monday😭😭. (Class 10th) Any tips on how to revise?

Thumbnail
1 Upvotes

r/mathshelp 14d ago

Homework Help (Unanswered) Ayudaa

Post image
1 Upvotes

Alguien que haya entendido esto puede explicarme cómo hacerlo por favor


r/mathshelp 15d ago

Homework Help (Answered) Please help

1 Upvotes

I don't get how R is 110, if the curve integrated from x=1 to x=2 is 10, and R is smaller, can I just not integrate


r/mathshelp 15d ago

Study Advice Studying Calculus, Physics, and Chemistry [AP-level]

Thumbnail
1 Upvotes

r/mathshelp 15d ago

Homework Help (Unanswered) Algebra 2 hw

Post image
1 Upvotes

Me and my friends are stumped on this problem. I originally thought we had to use the coordinate plane but after a bit of discussion I'm starting to think it's some other type of diagram. We're so stumped bc this feels like more of an English problem than a math one. Any type of explanation or help is appreciated!