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Denis
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Denis
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Join Date
02-17-2004
Last Activity
Yesterday
11:51 PM
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Denis
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Yesterday,
01:36 PM
Denis
replied to a thread
Thanks?
in
Math Odds & Ends
Looks like I missed your edit: "Last edited by mmm4444bot; Yesterday at 12:30 AM. Reason: cropped and rotated image" OKAY: thanks Mark, and to...
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2 replies | 89 view(s)
Yesterday,
01:30 PM
Denis
replied to a thread
Draw a right triangle with an acute angle and radius of incircle given
in
Geometry and Trig
Ohhh...r = 4, not 42 (the "2" stuck to the "4" when I quoted your ORIGINAL post!). Anyhow, same thing: / 2 = 4 So a = 2r / (sqrt(3)-1) I...
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7 replies | 274 view(s)
Yesterday,
09:03 AM
Denis
replied to a thread
Cryptic clue (Dec.15)
in
Math Odds & Ends
That was a vIGOrous solve Mark!
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3 replies | 114 view(s)
Yesterday,
12:45 AM
Denis
replied to a thread
Draw a right triangle with an acute angle and radius of incircle given
in
Geometry and Trig
radius of incircle of a right triangle = (sum of the 2 legs - hypotenuse) / 2 Yours is a special 30-60-90 right triangle. If short leg = a, then...
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7 replies | 274 view(s)
12-16-2017,
08:34 PM
Denis
replied to a thread
Draw a right triangle with an acute angle and radius of incircle given
in
Geometry and Trig
Can't read/reach your attachments. Are you familiar with the 30-60-90 triangle?
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7 replies | 274 view(s)
12-16-2017,
02:41 PM
Denis
replied to a thread
Solving Equation W/ Fractions and Decimals: (100p-4000/100p)=.3
in
Beginning Algebra
Another way is criss-cross multiplication (my favorite). (100*p - 4000)/(100*p) = 0.3 / 1 1 * (100*p - 4000) = .3 * 100*p 100*p - 4000 = 30*p...
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6 replies | 154 view(s)
12-16-2017,
10:44 AM
Denis
started a thread
Thanks?
in
Math Odds & Ends
Rich, many thanks for a clear readable attachment. Happens in about 1 out of 1000 cases here :rolleyes:
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2 replies | 89 view(s)
12-16-2017,
10:38 AM
Denis
replied to a thread
Why do equations with two distinct variables with 2 distinct linear equations work?
in
Intermediate/Advanced Algebra
2 + 3 = 5 ; we all agree 3 + 2 = 5 ; PROVE IT :rolleyes:
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10 replies | 321 view(s)
12-15-2017,
08:55 PM
Denis
replied to a thread
If a person weighs 15 stone 3 pounds and there body fat percentage is 33%....
in
Arithmetic
What does "guest" mean?
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7 replies | 263 view(s)
12-15-2017,
03:08 PM
Denis
replied to a thread
Why do equations with two distinct variables with 2 distinct linear equations work?
in
Intermediate/Advanced Algebra
Changing 2nd equation: S + U = 90 5S + 3U = 334 What do you get? Think about it...
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10 replies | 321 view(s)
12-15-2017,
09:42 AM
Denis
started a thread
Cryptic clue (Dec.15)
in
Math Odds & Ends
Aboard upriver tugboat, I leave with spinning head (7) 3 vowels inc'l 1 e
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3 replies | 114 view(s)
12-15-2017,
09:31 AM
Denis
replied to a thread
A rectangular piece of copper is 6 inches longer than it is wide....
in
Beginning Algebra
What quadratic equation did you get from that?
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6 replies | 287 view(s)
12-15-2017,
12:09 AM
Denis
replied to a thread
Deduce formula from spreadsheet calculation
in
Beginning Algebra
On google attachment, Gary has 58 of the total 312 months. 58/312 * 5 = .929487...or .93 rounded (as shown). It's that easy...unless I missed...
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3 replies | 122 view(s)
12-14-2017,
05:14 PM
Denis
replied to a thread
Why do equations with two distinct variables with 2 distinct linear equations work?
in
Intermediate/Advanced Algebra
**** see the error? Kick yourself :rolleyes:
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10 replies | 321 view(s)
12-14-2017,
05:11 PM
Denis
replied to a thread
How to solve congruence equation with unknown power? [11^a=9 (mod 23)]
in
Intermediate/Advanced Algebra
Sorry, I don't understand what you're saying. Hope someone else will...
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6 replies | 200 view(s)
12-14-2017,
02:27 PM
Denis
replied to a thread
Conversion of formula (or equation) given in metric form to US customary unit form
in
Arithmetic
Geeshhh Ishuda....you've been missing for some 6 weeks... Btw, nobody missed you :rolleyes:
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5 replies | 176 view(s)
12-14-2017,
02:23 PM
Denis
replied to a thread
How to solve congruence equation with unknown power? [11^a=9 (mod 23)]
in
Intermediate/Advanced Algebra
Geesshhhh...did you know that 9 mod 23 = 9? 11^a = 9 a = LOG(9) / LOG(11) Take over, Rover :cool: What is 30 mod 23?
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6 replies | 200 view(s)
12-14-2017,
02:03 PM
Denis
replied to a thread
Solving 2 equations, 2 unknowns (Money Growth = Inflation + Real growth rate)
in
Beginning Algebra
WHOA!! Can you solve this system for a and b: 2a + 3b = 27 5a - b = 8
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8 replies | 295 view(s)
12-14-2017,
01:48 PM
Denis
replied to a thread
Complex equation: ((R*ST) + (U÷V)) ÷ (WX + (Y÷Z)) = 50
in
Beginning Algebra
Only way to solve that is by brute strength, which means a looper program... Assuming that ST and WX are 2 digit numbers, and changing your...
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1 replies | 116 view(s)
12-14-2017,
10:18 AM
Denis
replied to a thread
Ancient Crypt?
in
Math Odds & Ends
BY(close to)GONE(dead) = OLD
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5 replies | 321 view(s)
12-13-2017,
02:54 PM
Denis
replied to a thread
Math exercises book recommendation
in
Math Odds & Ends
Can you not simply contact a local university or something?
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1 replies | 109 view(s)
12-12-2017,
11:19 PM
Denis
replied to a thread
Effective interest rate problem
in
Finance/Business Math
I don't "follow" what you're asking... Anyway, works like this: p = present value ($1) f = future value (1.25) i = interest per period (.0188)...
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6 replies | 215 view(s)
12-12-2017,
09:09 PM
Denis
replied to a thread
Circus Crypt?
in
Math Odds & Ends
grandstand = show off grand = impressive stand = bear Nice one!
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4 replies | 215 view(s)
12-12-2017,
07:13 PM
Denis
replied to a thread
Effective interest rate problem
in
Finance/Business Math
Can't read your attachment.... Can you post the question yourself?
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6 replies | 215 view(s)
12-12-2017,
01:38 PM
Denis
replied to a thread
Divide Sum of Funds into three equal groups of people with three different amounts
in
Beginning Algebra
Make up smaller example, like: 12@025 = 0300 12@050 = 0600 12@100 = 1200 ------------------ 36............2100
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2 replies | 131 view(s)
12-12-2017,
01:30 PM
Denis
replied to a thread
Denominator 1 With A Decimal Numerator
in
Arithmetic
Whoops...forgot to remove the $: per 100 = per cent (cent = 100 in French) = % That's just a way of "looking" at it....
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9 replies | 256 view(s)
12-12-2017,
10:17 AM
Denis
replied to a thread
Denominator 1 With A Decimal Numerator
in
Arithmetic
per $100 = percent = %
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9 replies | 256 view(s)
12-12-2017,
12:25 AM
Denis
replied to a thread
The Brown Family Children: Charlie is the oldest child in the Brown family....
in
Beginning Algebra
Nooooooooo....YOU show your work, we'll check it... Them's the rules :idea:
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4 replies | 177 view(s)
12-11-2017,
08:27 PM
Denis
replied to a thread
Day Trading Account Balance Projection Formula
in
Finance/Business Math
Does that mean that $10,000 will be reached in 5000 / 65 = 76.923 = 77 trading days? 5000 + 77*65 = 10005: once a 5000 multiple is reached,...
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5 replies | 203 view(s)
12-11-2017,
10:57 AM
Denis
replied to a thread
Travelling headache!
in
Math Odds & Ends
Agree. Here's an integer example: 4d = 300 (distance X to Y) a = 5, b = 10, c = 20 u = 15 (time when A and B are d apart) v = 20 (time...
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3 replies | 159 view(s)
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About Denis
Basic Information
About Denis
Location:
Ottawa, Ontario
Interests:
puzzles
Occupation:
retired
Signature
I'm just an imagination of your figment !
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Total Posts
16,675
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General Information
Last Activity
Yesterday
11:51 PM
Join Date
02-17-2004
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4