/r/HomeworkHelp
Need help with homework? We're here for you! The purpose of this subreddit is to help you learn (not complete your last-minute homework), and our rules are designed to reinforce this.
Filter by Subject
Filter by Grade
Grade 1-6 (Pri) Grade 7-10 (Sec) Grade 11-12 (Pre-Uni) University/College
❗️ READ THE RULES BEFORE POSTING
Welcome to /r/HomeworkHelp!
We are one of the most unique subreddits on Reddit, one of the few subreddits that continually self-improve itself to make communications between a contributor and an asker as effective as possible.
Our rules are designed to help you get to the right answer, enforced by your fellow Redditors.
Please google before posting your question
✅ Posts should look like this:
The title should be of the form [<Level/Syllabus><Discipline>and/or<Topic>] <Question>? For example:
- [Grade 8 Math: Quadratic Equations] How to factorise ax2 + bx + c?
- [University Chemistry: Titration] What is my qs?
- [AS Level English: Essay Writing] Should all adverts be factual?
Include instructor prompts. What does your instructor want you to accomplish?
Still acceptable…, but preferably not:
- [High School Math] <Question>?
Be specific about your grade
- [Grade 8 Math] Help me!
What is your qs?
When your question has been answered, please edit the post's flair to "✓ Answered".
❌ Not Allowed:
Copied questions without context or explanation. You must show some work or thought.
"Do this for me" posts such as posting of quizzes or lists of questions.
Posts tagged "urgent," "ASAP," "important," "due in an hour," etc.
Requests for help with cheating, plagiarism, or other violations of academic integrity; violations of copyright or terms of use; or other illegal or unethical activities.
Being a jerk. Jerks get banned.
Offers or solicitations of payment in any form. Those who spam us will be banned. No warnings.
Advertisements of any form. This includes asking for "likes," page views, or similar things.
Surveys. Take them to /r/samplesize.
Keep in mind that we do not and will not have any sort of vetting procedure for responders. Accept answers at your own risk.
For citation questions, check the Purdue Online Writing Lab
Using LaTeX:
To use LaTeX on this subreddit, use u/LaTeX4Reddit. Simply mention the bot in a comment and put the expressions that need to be rendered in code blocks, and u/LaTeX4Reddit will respond. Please contact u/Oryv if the bot malfunctions, or if you have questions on how to use it.
Custom superscript and subscripts:
Here's the syntax:
*_sub_* makes sub
*`sup`* and ^(sup) both make sup
*_sub_`sup`* makes subsup
*`sup`_sub_* makes supsub
If you have trouble with spacing, add some blank spaces with
2300H becomes 2300 H
Spoiler Tags:
[text](#s) = text
>!text!< = text
Useful Symbols:
θ μ ← ↑ → ↓ ↔ ↨ ω α ∴
Basic Math: ≠ ≈ ≥ ≤ ± ∓ × ⋅ ÷ √ ‰
Geometry: ∠ ∟° ⊥ ∥ ≅ Δ π
Algebra: ≡ ≜ := ≈ ∝ ∞ ≪ ≫ ⌊x⌋ ⌈x⌉ ∘ ∆ ∑ ∏ γ φ π
Set Theory: ∩ ∪ ⊆ ⊂⊄ ⊇ ⊃ ⊅ ⊖ ∈ ∉ Ø
Calculus & analysis: ε ∫ ∮ ∯ ∰ ∇ δ ∞
Available Commands
- lock post |OP and Valued/Notable Contributors only|:
/lock - Mark post as —Pending OP Reply |non-top level comment only|:
**Therefore**,**Thus** - Re-flair post to ✓ Answered |top-level comment only|:
**Answer:**,**Hence** - change flair |Valued/Notable/Top Contributors|:
Mod: change flair to <FLAIR NAME>
For more commands, please see User Moderation
Some possibly helpful links:
Pastebin / JSFIDDLE.net/ IDEOne
Revert to older template
/r/HomeworkHelp
635,590 Subscribers
[College level / Mechanics of materials]
We've started learning about axially-loaded members. I feel like this should be an easy question, but for some reason my answers are all wrong.
The correct answers are at the top of page 2.
For part A:
I started off with finding the support reaction from the wall Fₐ. Then I tried finding internal loads for sections a, b, and c.
Since the member is homogenous and has uniform area, δ = 1/EA * ΣPL. However, the answer I ended up getting is off by a magnitude of 10⁷.
For part B:
Since it said δ = 0 and I'm supposed to find P₃, I set up the equation on page 2. This time my answer wasn't even close.
I tried watching this video by Jeff Hanson, but I still don't know what I did wrong. Should I not have solved for Fₐ the way that I did??
23:42 UTC
[Grade 12 Math: fractals] Minkowski sausage generating rule
hello! I'm really confused about the minkowski sausage iterations/generating rule. I've found two different rules and am wondering which one is the more "correct" method. can someone please clarify?
TY
23:21 UTC
[12: AP Macroeconomics: Hard] What is the process to solve this? It says this is a fiscal stimulus graph. I disagree
20:57 UTC
[Advanced Algebra Junior Year]
I’m need help understanding how I can calculate the volume of this 3D shape when the slant height of the cone is a square root.
20:49 UTC
Help Guys, [Grade 12 Geometry and Limit] I didn't translate the question because I thought it was already understandable.
19:57 UTC
[Grade 12 physics] I keep getting 0.255 as my answer which is wrong and I don’t know what I’m doing wrong. How can I start doing this question?
We only have enough info to calculate height so that’s what I assumed we did
19:05 UTC
[College Undergrad History] Do I have to cite the date a candidate announced their intent to run for office?
This isn't really a history paper, it's a sort of academic paper I'm submitting for a fellowship. I'm leading up to a section on Ronald Reagan's personal views as part of an overall theme on cognitive dissonance, and including a sentence on the duration of his career in Hollywood.
Do I have to cite the year in which I mention that he announced his candidacy for the California governorship by including a source that mentions this? I can't find a good source to use because it just shows Wikipedia type pages that source to books, and I think citing a whole book for one date seems a little excessive.
I normally over-cite when unsure, but I don't know if this counts as common historical knowledge, and if the fact that it's not the focus of the paper matters.
18:26 UTC
[High School Biology] In anabolic pathways, are the bonds between monomers stronger than the bonds within the monomers themselves?
Title
15:45 UTC
[year 12 math inequality]
the 7th root of 7! is larger then the 6th root of 6!. How do you solve I did LHS - RHS but couldnt get any evidence from that.
12:04 UTC
[Accounting class, college] Are the answers correct?
I marked my answers with a X.
- What is accounting?
A) It is the record of all the activities of a company. B) It is the discipline that records, classifies and summarizes the financial operations of a business. (X) C) It is an inventory control system. D) None of the above.
- Which of the following is an internal user of accounting information?
A) Tax authorities B) Investors C) Managers (X) D) Financial analysts
- Which of the following is a way of operating a business
A) Corporation B) Company C) Buying and selling (X) D) Self-employed business
- Which financial document shows the assets, liabilities and equity of a company?
A) Income Statement B ) Balance Sheet (X) C) Cash Flow Statement D) Statement of Changes in Equity
- What resource is essential to start a business?
A) Capital (X) B) Customers C) Inventory D) All of the above
09:29 UTC
[A Level Maths, Differentiation]
The question said to prove that y=-x/(x+c), but I could only get the thing on the right. Am I supposed to do some missing step or smth? Question is differentiate the equation on top left and prove that y is ~~
08:40 UTC
[Undergraduate Engineering: Free Body Diagram] Is this FBD correct? As in, can I accurately get the forces if I solve the equilibrium equations based on what I have drawn? K is a spring, all joints are free moving pin joints, it is static. Actual structure is a pantograph leg
08:37 UTC
[Grade 11 Vectors] Question e.
I am not sure where to go currently. I have substituted m+n for -a+b and have tried to express OP as OA+m. I feel I am thinking about it the wrong way
08:06 UTC
[Grade 11 Calculus] Does this problem use derivatives by any chances?
For starters, I was tasked to make a word problem involving the application of derivatives and make a trailer based on the problem. The problem is that our trailer involves people running away from somebody. The question I made is this.
A woman is chasing a man in the same direction. Both of them run at 1 ft/s. However, the woman chasing is accelerating at a speed of 1 ft/s^2. Assuming the distance between them is 10 meters, what is the rate of change in the distance between them if the woman ran 10 feet?
My process on trying to solve this with derivatives
I was trying to make a related rates question based on our film. What I need is confirmation of whether or not this problem is a related rates question. Do I need to change the problem?
05:29 UTC
[Homework Website Question] Edfinity
Help! I turned in my homework a day late because I forgot to hit the "turn in homework" button, but I did not actually save any new answers. Does edfinity count me off?
03:56 UTC
[Integral Calculus: Volume with Discs] What did I do wrong?
03:34 UTC
[Grade 11 geography] can you help with this
00:56 UTC
[Highschool chemistry] Any tips on how to make sure you drew the right Lewis structure?
I have a homework assignment where you need to draw the Lewis Structure of some molecules. I don't need the exact answer, I just wanna know how i can make sure i did it right.
23:57 UTC
[12 grade physics: fluids] how much force should I apply to the fluid B so that both fluids are at the same height
23:05 UTC
[University Design Geometry/Trig: Vectors] Where would I start with this question? Feeling very lost
21:58 UTC
[Intro to Bio. Anthropology: Punnett Squares] I feel like I'm missing something obvious.
I haven't done punnett squares for years and only then with four squares. I could probably work this out with just the Hardy-Weinburg equation, but I'm being asked to answer with a punnett square. I just don't know how that's possible when percentages in a four box can only be in multiples of 25% and a 9 box in multiple of 11.11. I tried looking at Bozeman Science's video and my textbook isn't any help. I feel like I'm missing something stupidly obvious but I just can't figure out what.
I edited the actual number in the question to rule out cheating. I really just want to how I would even start to go about this without the Hardy-Weinburg equation.
21:42 UTC
[Y13 Mechanics] Range of values
Where on earth did they get S + F from??
21:42 UTC
[college physics: motion w/ constant acceleration] I already got the question wrong, but I don’t understand the given answer
At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a constant acceleration of 2.50 m/s^2. at the same instant, a truck, traveling with a constant speed of 15.5 m/s overtakes and passes the automobile.
How far beyond its starting point does the automobile overtake the truck? A: 192 m
21:16 UTC
[Grade 11: Pre-Calc] Am I doing this right?
20:56 UTC