r/HomeworkHelp

[Ap Biology, How do I tell which molecules will bind with hydrogen/ become an solution with water]
▲ 20 r/HomeworkHelp+1 crossposts

[Ap Biology, How do I tell which molecules will bind with hydrogen/ become an solution with water]

Im really confused about how I can understand what molecules from certain hydrogen bonds especially with the ones given. My teacher wants us to be able to get the answer and be able to adequately explain how we got it

The question asks which molecules would form hydrogen bonds with itself or with water molecules if in a solution

I have no idea

u/iori-angel__ — 1 day ago

[AP Statistic Unit 1: Exploring One-Variable Data and Collecting Data] Is Sarah’s identification of the variables actually incorrect?

Based off the information I believe she didn't make any mistake however the question said "incorrectly identified" I double checked everything:

Information: "She records whether or not each adults owns a pet (yes/no)"

Information: "She records... their score on a stress survey"

Identified: "identified the variables as owning a pet, and scores on the stress survey"

My guess: She forgot the classify which variables is which, such as which one is categorical variable or quantitative variable.

Thank you in advance!

u/BringBackDumbskid — 19 hours ago

[Year 11 calculus] Help with this question

I could only find an approximate answer (2.6 something) using a slider and guess the value as e but I’m not sure how to actually work out the question. please help thanks! :)

u/ch3rrycsmos_ — 2 days ago

[Freshman Math Perimeter] Trouble understanding perimeters

Just started my freshman year and learned my math teacher doesn't allow retrys on homework so im trying to get comfortable with this work quickly. I am somewhat familiar with the basics from last year but complex shapes like these confuse me.

u/Organic_Equivalent3 — 2 days ago

[College level math:Calculus 1:Overlapping Piecewise functions]

Hello guys, I was making my math activity, then i noticed something, how do i solve this?

Its a continuity problem wherein i need to find out if the function is continuous or not. However, the given piecewise function is overlapping, resulting in defined answer at the top while having defined answer on the bottom.

u/RevoGames23 — 2 days ago

[College Math, Fourier Series] Find coefficient a0 without Euler formulas

I am given a bunch of functions and their fourier series, with the constant not filled in. I'm supposed to find the constant coefficient a0 without Euler's formulas. I'm not sure how to approach such a problem.

An example of such a function and series:

f(x) = x*(pi^2 - x^2 )

f*(x) = a0 + 12 * ( sin(x)/(1^3 ) - sin(2x)/(2^3 ) + sin(3x)/(3^3 ) - ...

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u/OnlyWorker2342 — 2 days ago

[Grade 11/Sec. 5 Physics: Mirror images] How to represent a figure projected in two adjacent mirrors that also reflect each other?

Would greatly appreciate any and all hep, usually physics isn't particularly difficult to me but mirror images are apparently the exception, I can't seem to visualize it properly in my head at all.

My apologies for the French, the translation is as follows (the translation may not be very good either as neither of these two are my first language):

In this illustration, we observe not only images of the giraffe, but also one image of each of the two mirrors M₁ and M₂. Represent the situation seen below. For the sake of simplicity, only the two foremost legs of the giraffe (P₁ and P₂) have been shown.

u/Self-proclaimed_god — 2 days ago

[iGCSE Science] How the hell does Pb form 2+???

I'm doing Chemistry work to prepare for next year, and this involves electrochemistry. The question is something I want to work on on my own, but essentially, it involves lead(II) bromide.

I can get that Bromine forms a negative something ion, and that lead would be +2 in this situation to form an ion, but I can't wrap my head around WHY it is +2 when it has 4 electrons in the outer shell.

Whenever I have asked my teacher about this, he responds with "Don't worry, just know that it DOES form +2" and "We'll do transition metals later" but I need to understand why something works the way it does before I can understand it. I just can't accept that it is true until I know why it is true, and that's really stopping me from understanding ANY Chemistry work.

Can someone explain it to me? A dot and cross diagram would be good, but if not, just explain it like I'm a 5 year old.

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u/totallcringee — 4 days ago

[O level Elementary Math] Number pattern help

I know p, q, and r 22 23 and 24 but I don’t know how to use this simplification to find the sum of the full term

u/epicboi8764 — 4 days ago

[5th grade math] Don't know how to find the answer

I have read this question a million times. Asked A.I. called other students in my daughter's class. Tried to touch base woth the teacher but waiting to be added into dojo. Looked for the answer key dor the worksheet. They are working on multiplication. Nothing with u known variables. I dont see a way to solve anything without at least

1 how many pencils are in the boxes that go into the carton

2 how many students are in the school

3 how many pencils they are figuring each student will need for the year

4 how many cases they bought

5 or how much their total was.

Without another number in this im at a loss and I hope someone else will have seen this one before. ‐-------------------------------------

UPDATE We went with the only math that was provided. How much is each box of pencils if the cartoon is $20. Thank you to the ones that caught that. But apparently that makes us wrong. It was intended to be a multiplication problem. That we were to make up a number for and just go with it.

There is my issue with that though, we did math based off of information that is provided, and speculated the question. But are going to be marked as incorrect. Children who did not catch the issues with the structure of the question that choose to do "how much is 54 cases" provided the math of 54 x 20 are marked as correct. Because they "made up a math problem".

The first day paperwork that was sent home says teacher communicates via class dojo app. I am still waiting for teachers permission to join to communicate the perfered method. But I will say I had child call classmates and they had no idea what they were looking at either and just was going to "go with 54 x 20 because its the smallest numbers".

Wonderful start to the year.

u/Rare-You-5488 — 6 days ago

[6th Grade verbal expression]

So I’m going over my son’s math quiz to help him understand some of the questions he got wrong. He got partial credit for his answer for question 8. After writing his verbal phrase I got the same expression as the question. Am I doing something wrong or is there something I’m missing? I feel like his answer is technically correct. I am stumped.

Edit: so my son has no issue solving the expression in question. He knows PEMDAS and the rules from left to right. The question clearly states, WRITE A VERBAL PHRASE that matches the expression.

u/KookyPermit4405 — 8 days ago

[Bio help assignment ]

Claim: vaccinations cause harm
Research question: to what extent does gov vaccination reduce incidence of cervial caner in vaccinated people

Or

To what extent does MRNA COVID 19 vaccinations affect the incidence of myocarditis in adolescents

I need to find graphs and figures that show this pleaseee I’m begging. Please provide me links to graphs to scientific ones

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u/Southern_Stretch_256 — 6 days ago

[University mathematics: basic stochastic processes] Conditional probablities for Poisson processes????

I have an exam coming up, and the solutions manuals are pretty terrible, which wouldn't be an issue if the professor also wasn't. But I essentially have to relearn the entire course on my own, and it is not going well... Here's my question:

https://preview.redd.it/mvgr1g4k2ijh1.png?width=1237&format=png&auto=webp&s=396cbeccea606a46e8cc1624557d6d2a43dfe970

So I tried splitting it up as follows (P{X(1)=0, Y(1)=1, X(2)=0, Z(2)=1}+P{X(1)=0, Y(1)=1, X(2)=1, Z(2)=0}+P{X(1)=1, Y(1)=0, X(2)=0, Z(2)=1}+P{X(1)=1, Y(1)=0, X(2)=1, Z(2)=0})/P{Po(4)=1}

But after that I think I'm doing something wrong, because I get each of the terms in the numerator to 2/e^(2) and the final probability to the same. The solutions say it's 1/e.

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u/ilikemychem — 5 days ago

[Grade 10: writing]

Okay I dont know how to even use this app

Context, this isnt graded its to see what we know, but i just got nervous..

Instructions were "write an extended paragraph, indicate the purpose, audience and tone"

But im stuck on the extended paragraph, like I know it sounds self explanatory, i was just planning on writing more, but the more i kept thinking about it the more nervous I got so I just thought I would ask

I know im an idiot please💔💔 dont bully me

u/Specific-Still-7266 — 5 days ago

[3rd Grade Science] Life Cycle of an Animal with Bar Graph

Just looking for some opinions on this one.

I think the answer is Option 2 (8 days), but I’ve heard other people say Option 4 (20 days).

I’d love to hear how any of you here see it

u/Tricky_Ad9278 — 10 days ago

[Grade 12 Advanced Functions: Trigonometry]

Hello, I need some help understanding this concept. 240 degrees converted to radians is 4 pi/3, so wouldn't that make this a multiple of 30 degrees?

"30° can be rewritten in radians as pi/6". Since 240 rad cannot be written as a multiple of pi/6 rad this cannot be a multiple of 30°." This is the explanation the teacher gave me, but it doesn't make sense.

u/Embarrassed-Good1883 — 9 days ago