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Today,
07:25 PM
JeffM
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
No problem. The problem with TEACHING math is that steps that have become obvious through experience to the teacher are left out. I see w =...
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15 replies | 139 view(s)
Today,
05:43 PM
Otis
replied to a thread
Can't Post Some Capital Letters
in
Administration Issues
HMMM? That feature DOESN'T SEEM TO BE WORKING correctly …
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11 replies | 262 view(s)
Today,
05:29 PM
Otis
replied to a thread
Cryptic Substitution?
in
Math Odds & Ends
Clever cat, man. :cool:
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2 replies | 179 view(s)
Today,
04:32 PM
Dr.Peterson
replied to a thread
Help with this pls
in
Geometry and Trig
Do you have reason to think there is enough information to solve this? I see nothing to prevent you from moving the right side to any desired...
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3 replies | 84 view(s)
Today,
03:11 PM
Simonsky
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
Some useful basic rules. Thanks Jeff. I get it! I now realise it is just the normal process of getting the same denominator when you have...
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15 replies | 139 view(s)
Today,
02:56 PM
JeffM
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
Some useful basic rules. a * 1 \equiv a \equiv 1 * a. Rule 1. \dfrac{b}{1} \equiv b. Rule 2. c \ne 0 \implies \dfrac{c}{c} = 1. Rule 3. ...
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15 replies | 139 view(s)
Today,
02:53 PM
Nj087
replied to a thread
Help with this pls
in
Geometry and Trig
Hi, thank you for replying, I need to calculate the sides of the rectangle, I have already calculated some of the angels and the two sides of the...
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3 replies | 84 view(s)
Today,
02:15 PM
Jomo
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
In the future you can find the difference between your answer and the books answer and if the difference is 0 then both answers are the same. This...
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15 replies | 139 view(s)
Today,
02:13 PM
Simonsky
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
Not at all! I'm just struggling with the fractions. I still don't get how BOTH numbers become part of one fraction-I'm afraid I don't understand...
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15 replies | 139 view(s)
Today,
02:09 PM
Jomo
replied to a thread
Hard Inverse function f(x) problem
in
Intermediate/Advanced Algebra
If f(a) = b, then f-1(b) = a. NOT (f-1)' (b) = a
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15 replies | 369 view(s)
Today,
02:04 PM
JeffM
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
Are you serious? (4 - 2a) * a = 4a - (2 * a * a) = 4a - 2a^2, right? a = \sqrt{3} \implies (4 - 2\sqrt{a}) * \sqrt{a} = 4\sqrt{3} -...
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15 replies | 139 view(s)
Today,
01:52 PM
Jomo
replied to a thread
Problem 3
in
Intermediate/Advanced Algebra
Please plot f(-2), f(-1), f(0), f(1) and f(2).
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2 replies | 59 view(s)
Today,
01:46 PM
Denis
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
Guess that's why he wasn't too impressed with my post:(
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15 replies | 139 view(s)
Today,
01:46 PM
Jomo
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
No, that is not correct. You are saying that (3*4)*5 = (3*5)*(4*5) which is not true. If you choose not to multiply the 3 and 4 first then you should...
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15 replies | 139 view(s)
Today,
01:44 PM
pka
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
The above reply begs the question: do you understand the operations with fractions? \dfrac{A}{B}-C=\dfrac{A-BC}{B}...
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15 replies | 139 view(s)
Today,
01:42 PM
Jomo
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
Denis, the OP got one step further than that by realizing 1+ 3 = 4 and Z = (4 - 2√3) / √3
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15 replies | 139 view(s)
Today,
01:30 PM
Simonsky
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
But haven't you taken the whole thing as divisible by sqrt3 ? isn't the two a separate number that you need to multiply by sqrt3/sqrt3 separately?
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15 replies | 139 view(s)
Today,
01:21 PM
tkhunny
replied to a thread
Problem 3
in
Intermediate/Advanced Algebra
Do you understand the Domain given? Is it continuous? How many points have you plotted in your attempt to solve this?
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2 replies | 59 view(s)
Today,
01:21 PM
flip101
replied to a thread
Chess Probability
in
Probability / Statistics
This is exactly the same question https://www.reddit.com/r/learnmath/comments/37e3eb/probability_question_involving_randomlyplaced/ ...
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4 replies | 289 view(s)
Today,
01:19 PM
tkhunny
replied to a thread
Problem 2
in
Intermediate/Advanced Algebra
Please share with us the definition of a "75th percentile".
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1 replies | 51 view(s)
Today,
01:10 PM
JeffM
replied to a thread
Calculation Logic/Reasoning
in
Finance/Business Math
OK. Let's take this in steps. As denis said, it is a mathematical fact that \dfrac{a}{b} * c = \dfrac{a}{b} * \dfrac{c}{1} = \dfrac{ac}{b} =...
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6 replies | 201 view(s)
Today,
01:08 PM
pka
replied to a thread
Surd Problem
in
Intermediate/Advanced Algebra
\begin{align*}\dfrac{4\sqrt{3}}{\sqrt{3}}-2&=\dfrac{4-2\sqrt{3}}{\sqrt{3}}\\&=\dfrac{4-2\sqrt{3}}{\sqrt{3}}\left(\dfrac{\sqrt3}{\sqrt{3}}\right)\\&=...
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15 replies | 139 view(s)
Today,
01:00 PM
Dr.Peterson
replied to a thread
Help with this pls
in
Geometry and Trig
Here is a better copy of your picture: Now please state the problem in words, and tell us what you have done to solve it. We need to know what...
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3 replies | 84 view(s)
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