Login

r/HomeworkHelp

[College Entry Level Statistics: Percentiles] How do I find the 54th percentile?
▲ 1 r/HomeworkHelp

[College Entry Level Statistics: Percentiles] How do I find the 54th percentile?

Hello, I very much so need some help figuring out how to do this question, I’ve redone it 10+ times and for the life of me cannot figure how it’s done. I was able to answer every other percentile question minus this one. Which is a bit humiliating because this question is only worth 1 point and the others were worth more and I got them correct. Please explain to me how to do this correctly 🥲. P.S I will not get the same question ever again, so I am not cheating. Thank you!

u/Interesting_Key1838 — 1 hour ago
▲ 1 r/HomeworkHelp

[Grade 9 Physics] how much tension least required to pull the board?

Person mass is considered m,

Board is balanced, mass is considered M,

Friction is not involved,

Rope mass not involved,

Point A is a rotating point. How much tension(pull force) is least required to pull the board?

I've calculated T(tension)=(m+M)g/3

My friend calculated (m+M)g/2

u/CubingOverload_2010 — 13 hours ago
▲ 2 r/HomeworkHelp

[ 8th grade maths ] need help understanding how to find volumes of 3d shapes

Hihi so I’m struggling a lot on the topic of finding the volumes in 3d shapes… (especially trapezium & triangular prism ) I’m mostly confused on how to apply the formula and how to find the stuff to plug into the formula

I was able to do q1 but for q2 I’m a bit confused since it’s 34x15(10+5) and I’m really confused because idk how my teacher got the 10+5 from

u/rsx4u — 14 hours ago
▲ 2 r/HomeworkHelp

[Grade 8: Geometry] How to calculate the area of the colored region.

Hello! I am having trouble figuring out how to solve this exercises from my school worksheet.

The text at the top sáys: Calculate the area of the colored region in each case.

Could someone please tell me on how to approach this problem? (sorry if there is any writing mistakes english is not my first language 😥).

https://preview.redd.it/bbhzqfbsxabh1.png?width=370&format=png&auto=webp&s=a4bfec14f309d1f7186b22b76e43f1003968f6c4

reddit.com
u/ComplexFirefighter61 — 1 day ago
▲ 1 r/HomeworkHelp

[GCE Advanced level] : I have been stuck with this maths problem for 2hours

I found that AMn=aP/2^n but I can't find P in terms of n. I have P * 1 = 1 and P * 2 = 3 and P * 3 = 5 and P * 4 = 11 because AM * 1 = a / 2 and AM * 2 = 3a / 4 and AM * 3 = 5a / 8 and AM * 4 = 11a / 16

u/Chebakia19 — 1 day ago
▲ 1 r/HomeworkHelp

(College, trig) Question ab angle on this trig cheat sheet

Reviewing using this sheet from Paul’s online math notes and don’t get why theta is different for the two definitions? Just wanna make sure I’m understanding it right

u/yeahyeahlittlewing — 2 days ago
▲ 2 r/HomeworkHelp

[University: Mass spectrometry] Calculating mass from spectrum

The exercicr doesn't say what type of spectrometry ot is but from the context I assume it's MALDI-TOF. The other kind of mass spectrometry we've seen in class is Electrospray-TOF.

So I'm suposed to calculate the mass of a protein using info from peaks A and B, or any other pair of peaks. Then calculate the charge of peak C. If it's MALDI-TOF I would assume peak B is the single-protonated protein, but if I try to do an equation system with other peaks it doesn't hold up. If it were Electrospray-TOF I think the m/z would change in regular intervals?

Help, my teacher thinks this is too easy to properly explain.

u/faux_adult — 1 day ago
▲ 1 r/HomeworkHelp

[12th grade English 2nd languge]

https://preview.redd.it/f4wgb4a9z5bh1.png?width=943&format=png&auto=webp&s=4f3d1425df7181c9a634e40d069d17c17876f35f

I've struggled a lot with this question. Some teachers solve it as A while others choose B for different reasons but I think that both options are stupid. Doesn't choosing A imply that me remembering not locking the door was the reason we were robbed? And choosing B imply that I didn't lock the door deliberately? I'm not a native English speaker so I would like to know how you guys would solve this

reddit.com
u/Other-Description262 — 2 days ago
▲ 0 r/HomeworkHelp

[University Linguistics] (essay help) How does chinese writing system work, what makes it unique, why are there so many characters in it and why did it became so popular and influential?

Context: I must write an essay about comparison between two writing systems. I chose latin script and chinese. I already have enough knowledge about Latin Script but I would greatly appreciate any information about Chinese writing system and what makes it different than other writing systems! Thank you in advance!

reddit.com
u/ZooZwaves — 3 days ago
▲ 0 r/HomeworkHelp

(Grade 8 math: Coordinates) how do I determine x and y?

Hey guys, 8th grader student here. I need help with specifically question no.12. I kinda forgot the steps and I don't really understand the examples tested in my textbook. Also I tried gauthmath too, but that didn't work.. so anybody can help me? (Sorry it's in Malay, try translating it tho)

u/Nin1x_ — 2 days ago
▲ 1 r/HomeworkHelp

[10th grade algebra 2] can someone explain how to solve

im taking algebra 2 this summer and its pretty fast paced and i just get so confused since my teacher doesnt teach that well.

u/No_Collection1075 — 2 days ago
▲ 1 r/HomeworkHelp

[Grade 11 ACT Prep: English Section] why do i keep missing the same comma questions

been grinding act english sections for like three weeks now and my score literally won't budge past a 26. Every single time I miss the same stupid comma splice questions. I know the rule. I can explain the rule. Then I get to question 34 and my brain just... turns off

My older brother keeps telling me to "just read it out loud" which works maybe half the time. The other half I sound it out and somehow both versions sound fine to me???

A friend put me onto boosted brains and their english section breakdowns actually made me realize I was overthinking the wrong things. like I was hyperfocusing on weird edge cases when most of my errors were just independent clause vs dependent clause stuff. which is embarassing because we literally covered this in 8th grade

anyway not really a homework question I guess, more of a "how do you stop making the same error you've identified and understand perfectly but still make" question. If anyone has tips besides "do more practice tests" im all ears. Already done 6 of them and im losing it.

reddit.com
u/AdeptnessCritical356 — 3 days ago
▲ 1 r/HomeworkHelp

[College Intro to Statistics: Hypothesis Testing] What is the minimum sample size needed to perform a hypothesis test for proportions?

Hi everyone, I just need help understanding how I got the wrong answer on a practice test. Here is the prompt:

"A teacher wants to determine if the pass rate for a particular group of students is significantly different from 81**%.**

What is the minimum sample size needed in order to perform a hypothesis test for proportions?"

The answer I got was 13.

I used the equation n(p) is greater than/equal to 10.

But the correct answer is 53, which I know can be solved by using n(1-p) is greater than or equal to 10.

My issue is the question asked for minimum sample size, so wouldn't that mean 13 is the minimum? I am doing an online course, and the online instructor just repeated n(1-p) to me via email without explaining why that is preferred over the one I used. Can anyone help?

reddit.com
u/MochiAccident — 3 days ago
▲ 3 r/HomeworkHelp

[Math: Calculus] Shouldn't the curve in R^n be defined as t \in [a,b] and not [0,1] for the overall definition?

Because from my understanding the first differentiable function is the curve itself right? And since it is defined on [a,b] shouldn't we denote it as the curve with t in [a,b]. Where did [0,1] come from?

u/Sweet-Nothing-9312 — 3 days ago