/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
629,677 Subscribers
[Grade 10: Mathematics] Trigonometry question. Please help my find the height of the hill (H). The answer in the textbook is 1541.20m but im not sure how they got this, please help me find he answer. :)
13:30 UTC
[University: Epidemiology and Biostatistics] Can someone please help me identify what type of measure of frequency this is?
My original idea was that I would've been point prevalence considering the questions asking us to identify the measure of frequency at the 'beginning' of the study (week 1), this measure would be the most appropriate as measures are related to one specific point in time. I may be overthinking it but I need to know if it is this point prevalence (or another type of measure) to answer the following questions after it.
Thank you!
13:15 UTC
[Grade 10 Maths: Trigonometry] Please help me find H
13:03 UTC
[Calculus 1] Optimization
hi! can someone explain to me how V(s) came to be?
i know the formula for volume goes length * width * height but i just cant understand how you get each term in V(s) especially the third term, s
13:02 UTC
[Corporate Finance] Shouldn't the EAR be 0.050625?
12:31 UTC
[University physics] The green plate is of uniform thickness, R = 91.2 cm. Determine the x of the center of gravity -coordinate.
12:17 UTC
[O Level Additional Mathematics: Binomial Theorem] Unable to get integer values of a and b
I have attempted to solve the above, through the use of the binomial theorem, but I am unable to obtain integer values of a and b
From the answers, it is stated that a= -1 and b = 1
Thus far, I've expanded both (1+ax)⁶ and (2+bx)⁵ and formed this pair of simultaneous equations
-112 = 80b + 192a 80 = 480a² + 480ab + 80b²
I can't seem to find integer values of a and b though. Hope someone can correct my steps and guide me to the right answer.
11:59 UTC
[Grade 11-12 Statistics: Analysis of Variance] What is the difference between a One-way and Two-way ANOVA?
I'm really having a hard time trying to find the gist of it— I'm sorry.
Say, if I had three samples: 1, 2, and 3, all having different concentrations but the same 2 ingredients used;
e.g: Sample 1: 50% of this, 50% that, Sample 2: 70% this, 30% that, Sample 3: 30% this, 70% that,
and I were to compare these three samples on which would be the "best performing" sample in terms of this, this, and that, what ANOVA should be utilized? I feel so dumb not learning stuff even after browsing the web for hours.
11:23 UTC
[pre-calc] What did i do wrong?
Teacher said i got the right answer but i couldnt do it this way. What else am i supposed to do?
The question is: find a and b to make the function differentiable in x=2
10:16 UTC
[Grade10, chemistry; solution and dilution] how would I calculate this?
09:52 UTC
[Social studies] Searching for historical cases of cultural fusion of art and technology
Hi reddit, I'm looking to do an essay, and I can't seem to find good information on this topic. I'm looking for cases in history where artistic(preferably art with physical artifacts such as statues or paintings) or technological advancements happen via cultural fusion, such as Greco-Buddhist art or Japonisme art. Many thanks to anyone who can find more examples.
09:46 UTC
[Pre-uni physics: beam optics] how am i supposed to know where on the mirror the light reflects?
A streak of light from B is passing through A after it reflects in the mirror. a) How far does the light travel from B to A? b) calculate the angle of incidence.
How am i supposed to know where the light reflects?
09:46 UTC
[biology: biotech] Is bioprocess engineering used for only eukaryotic cells? There's mentioned "desired microbe" but it's confusing by that slash. Anyone have any trusted resource to know it right?
09:43 UTC
(Math 4, finding Magnitude and Angle of direction) I don't understand how to get this awnser!
So I can somewhat do the Magnitude, the awnser I got was square root of 52 which I know simplifies into 2 square root of 13 (somehow) But I just do not understand how to get the direction angle?
08:10 UTC
[Grade 11 Math: Limits] Why is it <= instead of just <?
I get that delta < 1/3 epsilon but why is delta also potentially equal to it?
07:24 UTC
[Physics] How is the direction of the force to the right?
06:58 UTC
[grade 11 Basic calculus] idk how to solve this related rate question
A ladder, inclined at 60° with the horizontal is leaning against a vertical wall. The foot of the ladder
is 3 meters away from the foot of the wall. A boy climbs the ladder such that his distance z meters with respect
to the foot of the ladder is given by z = 6t, where t is the time in seconds. Find the rate at which his vertical
distance from the ground changes with respect to t. Find the rate at which his distance from the foot of the
wall is changing with respect to t when he is 3m away from the foot of the ladder.
06:14 UTC
[Calc 2]How do i add two power series together?
The "Textbook" link goes to this very unhelpful part of the textbook:
I also read the entire chapter probably 3 times by now. Nowhere does it talk about how to actually add the series together, just what happens to their intervals of convergence. At first I thought you multiply them together because of a different problem, but it doesn't give the right solution. Now I'm just so confused as to how you actually do this.
05:45 UTC
[Grade 10 Algebra]
I know it's probably super simple but how would you solve this? I can't seem to consistently get it down (also sorry my handwriting is bad but that top number is 69061.20 and the last number is 100). Thanks a lot in advance
04:11 UTC
[college mathematics: mathematical reasoning] need done tn pls help
i am completely lost on how to answer these questions, and atp i really just need the answers but any help is welcome. exam tmr means no time to learn it tn, i just need to have the right answers so my grade doesn’t tank once i take my exam. if yk what this is, pls help me 😭
04:01 UTC
[Grade 12 AP Physics 1] Can someone please name and explain this equation to me?
03:51 UTC
[PreCal 12: Geometric sequences] Is there an answer here with exponents? Or is it a trick Q
03:31 UTC
[1st Year SL Literature Individual Oral] Recommendations on relevant events from “The Sunflower: On the Limits and Possibilities of Forgiveness” and “The Handmaid’s Tale”
Hi everyone. I’m a first year sl literature student and I’m currently working on the IO. I was wondering if anybody could offer guidance on specifc events I could use to talk about. My global issue is “people’s ability to demonstrate fortitude while living in an oppressive society that suppresses them”. The books I have chosen are “the sunflower: on the limits and posssibilites of forgiveness” and “The handmaids tale”. If anyone has read both/either of these books could you please suggest some key moments/pages I could talk about? Thanks.
03:12 UTC