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Today,
08:11 AM
Zulgok
replied to a thread
Right triangle in a circle
in
Geometry and Trig
It's 29/2pi, but I can't find the legs. The pi is making it really hard. I tried using pythagoras theorem, but the numbers get all messed up.
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4 replies | 36 view(s)
Today,
07:48 AM
Subhotosh Khan
replied to a thread
Right triangle in a circle
in
Geometry and Trig
Then what is the length of the diameter of the circle? That would be also the length of the hypotenuse.
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4 replies | 36 view(s)
Today,
07:29 AM
Zulgok
replied to a thread
Right triangle in a circle
in
Geometry and Trig
Circumference, sorry.
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4 replies | 36 view(s)
Today,
07:16 AM
Subhotosh Khan
replied to a thread
Infinite sum help
in
Intermediate/Advanced Algebra
1/2 + 1/2 * 1/3 + (1/2 * 1/3) * 1/3 + ((1/2 * 1/3) * 1/3) * 1/3 + ... = 1/2*(1/3)^0 + 1/2 * (1/3)^1 + 1/2 * (1/3)^2 + 1/2 * (1/3)^3 + ...
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4 replies | 87 view(s)
Today,
06:06 AM
Subhotosh Khan
replied to a thread
A problem involving polynomials and degrees and confusing wording
in
Pre-Algebra
For a start - think about the problem with only two points. How about 3 points?
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2 replies | 49 view(s)
Today,
06:00 AM
Subhotosh Khan
replied to a thread
Right triangle in a circle
in
Geometry and Trig
What does that mean? Circumference? Diameter? or something else?
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4 replies | 36 view(s)
Today,
02:55 AM
Zulgok
started a thread
Right triangle in a circle
in
Geometry and Trig
Right triangle is in a circle. Circle's length is 14.5. 1 leg of the triangle is longer by 1 than the other one. Find legs' length and triangle's...
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4 replies | 36 view(s)
Today,
02:48 AM
Blueberry
started a thread
Prevention of Depression in At-Risk Adolescents A Randomized Controlled Trial
in
Probability / Statistics
http://jamanetwork.com/journals/jama/fullarticle/184014 Hello there! I am having a super hard time with this one. I have been writing my essay for...
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0 replies | 16 view(s)
Today,
02:09 AM
mmm4444bot
replied to a thread
Material needed to create an open box
in
Geometry and Trig
I had some extra time, so I reworked the exercise. I think the user is supposed to input the outside dimensions of the box. If I were...
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2 replies | 105 view(s)
Today,
01:49 AM
mmm4444bot
replied to a thread
A problem involving polynomials and degrees and confusing wording
in
Pre-Algebra
The key is the word 'always'. Yes, it's true that a zero-degree polynomial will pass through 40 points on a horizontal line, but what if one (or...
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2 replies | 49 view(s)
Today,
01:07 AM
mmm4444bot
replied to a thread
Is there an specific order for solving systems of equations when doing substitutions?
in
Beginning Algebra
No, but some choices may be more natural than others. It depends on the system. It sounds like you might be making mistakes. Some of those...
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1 replies | 23 view(s)
Yesterday,
11:50 PM
Mathmonkey
started a thread
Is there an specific order for solving systems of equations when doing substitutions?
in
Beginning Algebra
I don't have a math problem right now, but whenever I'm given a system of equations, I get different answers depending on the order in which I solve...
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1 replies | 23 view(s)
Yesterday,
11:25 PM
fresh
started a thread
A problem involving polynomials and degrees and confusing wording
in
Pre-Algebra
Suppose you have n=40 points in the plane, each with a distinct x coordinate. What is the smallest degree d such that there is always a polynomial...
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2 replies | 49 view(s)
Yesterday,
10:32 PM
frank789
replied to a thread
Unsure How to Properly express my solution
in
Intermediate/Advanced Algebra
is there some way to pay you guys back for the help?/where do you all teach im transferring
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3 replies | 52 view(s)
Yesterday,
10:23 PM
frank789
replied to a thread
Unsure How to Properly express my solution
in
Intermediate/Advanced Algebra
awesome that makes 100 percent sense thanks!
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3 replies | 52 view(s)
Yesterday,
10:04 PM
ksdhart2
replied to a thread
Unsure How to Properly express my solution
in
Intermediate/Advanced Algebra
Your row-reduced matrix is correct. From there, it may be helpful to convert it back to a system of equations, to better see what's going on. Doing...
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3 replies | 52 view(s)
Yesterday,
08:55 PM
frank789
started a thread
Unsure How to Properly express my solution
in
Intermediate/Advanced Algebra
Ok working through a linear algebra problem set, I solve right to the end but my teacher has the solution in their key in a way I dont understand. ...
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3 replies | 52 view(s)
Yesterday,
07:26 PM
doughishere
replied to a thread
Calculus Problems Set Work-though, If Interested.
in
Calculus
Yup yup thanks! i have a programming background so sometimes when working with languages i know what i want to do but dont know how to do...
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11 replies | 398 view(s)
Yesterday,
07:02 PM
ksdhart2
replied to a thread
What is the derivative of y=(7+x)^(7+x)^2 ?
in
Calculus
As a note to other helpers here, this exact exercise has also been posted twice on the Askmath subreddit. You can find those threads here and and...
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3 replies | 59 view(s)
Yesterday,
06:41 PM
infinite
replied to a thread
What is the derivative of y=(7+x)^(7+x)^2 ?
in
Calculus
thanks i'll check that out... i've tried chain rule and power rule but... nope :(
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3 replies | 59 view(s)
Yesterday,
06:37 PM
mmm4444bot
replied to a thread
What is the derivative of y=(7+x)^(7+x)^2 ?
in
Calculus
What have you tried or thought about, so far? Do you know how to differentiate y = x^x ? If you're not sure, check out this tutorial: ...
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3 replies | 59 view(s)
Yesterday,
06:00 PM
infinite
started a thread
What is the derivative of y=(7+x)^(7+x)^2 ?
in
Calculus
:-|:mad::cry:
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3 replies | 59 view(s)
Yesterday,
04:22 PM
Lez
replied to a thread
Integration problem: area enclosed by y=x3-3x2+3x and y=13x
in
Calculus
It's difficult to show all the workings for this one due to it's complexity and the complexity of transcribing it all. Regarding negative area:- ...
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7 replies | 164 view(s)
Yesterday,
03:19 PM
tkhunny
replied to a thread
how many solutions are there for the equation sinxcosx = 1/6
in
Geometry and Trig
Why did you delete your useful response? We wouldn't know how to help you without that.
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5 replies | 96 view(s)
Yesterday,
01:41 PM
Subhotosh Khan
replied to a thread
how many solutions are there for the equation sinxcosx = 1/6
in
Geometry and Trig
Suppose I do a different problem: For x belongs to equation sinxcosx = 1/4? sin(x) * cos(x) = 1/4 2 * sin(x) * cos(x) = 1/2 sin(2x) = 1/2
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5 replies | 96 view(s)
Yesterday,
01:30 PM
Subhotosh Khan
replied to a thread
how many solutions are there for the equation sinxcosx = 1/6
in
Geometry and Trig
How can you show (prove) there are two solutions (in the given domain)?
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5 replies | 96 view(s)
Yesterday,
11:20 AM
tkhunny
replied to a thread
how many solutions are there for the equation sinxcosx = 1/6
in
Geometry and Trig
Have you considered the suggested transformation? \sin(2x) = 2\sin(x)\cos(x) Very useful.
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5 replies | 96 view(s)
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