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Denis
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Denis
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Join Date
02-17-2004
Last Activity
Today
12:51 PM
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Yesterday,
10:20 PM
Denis
replied to a thread
Quadratic simultaneous equation
in
Beginning Algebra
Jomo oh Jomo yo my zero, whoops hero !!
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11 replies | 167 view(s)
Yesterday,
06:59 PM
Denis
replied to a thread
Quadratic simultaneous equation
in
Beginning Algebra
Ya made zee typo Halls... aNUTter way: x^2 + y^2 = 5 y - x = 3 ^2 : x^2 - 2xy + y^2 = 9 Subtract from : xy = -2
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11 replies | 167 view(s)
Yesterday,
12:23 PM
Denis
replied to a thread
Simple logarithm question: simplify log(10)^5/log(10)^2 as log(10)^3
in
Intermediate/Advanced Algebra
WHY do you say it's "wrong"? Havva look: http://www.wolframalpha.com/input/?i=log(10)%5E5%2Flog(10)%5E2%3Dlog(10)%5Ex
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7 replies | 92 view(s)
Yesterday,
12:13 PM
Denis
replied to a thread
Quadratic simultaneous equation
in
Beginning Algebra
Did you make that up? If not, is it the original problem IN FULL? What do you mean with "simultaneous quadratic equations"? After substituting (as...
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11 replies | 167 view(s)
Yesterday,
12:00 PM
Denis
replied to a thread
Find for X for m(RXM)=x+81 (Geometry Question)
in
Beginning Algebra
http://mathonweb.com/help_ebook/html/equations_1.htm
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6 replies | 106 view(s)
Yesterday,
09:53 AM
Denis
replied to a thread
Find for X for m(RXM)=x+81 (Geometry Question)
in
Beginning Algebra
VERY good idea :rolleyes:
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6 replies | 106 view(s)
04-16-2018,
10:09 PM
Denis
replied to a thread
triangle and trapeze problem pls help
in
Geometry and Trig
Yer correct Doc: should be the parallel sides. He made same goof here (but corrected it):...
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3 replies | 105 view(s)
04-16-2018,
06:35 PM
Denis
replied to a thread
Logic Q's: "Beatrice ate 2/3 as many cakes as Annabel would have eaten...."
in
Math Odds & Ends
1st one looks like: B = A - 3 A = B/2 + 6 No idea about the 2nd; seems that number 1201 is involved...
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4 replies | 100 view(s)
04-16-2018,
06:12 PM
Denis
replied to a thread
How much simple interest would be paid on a loan of $1950 at 8.1% for 70 months?
in
Pre-Algebra
Betya a Canuk Toonie answer is 921.375:rolleyes:
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5 replies | 240 view(s)
04-15-2018,
07:43 PM
Denis
replied to a thread
How much simple interest would be paid on a loan of $1950 at 8.1% for 70 months?
in
Pre-Algebra
1950*.081/360*30 would be the monthly payment (if such is the arrangement) which means 1950 would still be due after 70th payment. "We went over...
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5 replies | 240 view(s)
04-15-2018,
01:19 PM
Denis
replied to a thread
Can someone help with the below please: circle inscribed in square w/ area 196cm^2
in
Geometry and Trig
Agree...but this one is "close": 11 / 14 = .7857142.... pi * 14 / 56 = .7853981.... Just another "badly written problem":confused:
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5 replies | 134 view(s)
04-15-2018,
12:32 PM
Denis
replied to a thread
Word Problem Help? "Dave and Sandy are frequent flyers with a particular airline...."
in
Beginning Algebra
A simple diagram = 1000 words! p = plane speed, w = wind speed (@p-w)..............876...............>2 hr : clearly p-w = 876/2 1.5...
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3 replies | 113 view(s)
04-15-2018,
12:08 PM
Denis
replied to a thread
Can someone help w/ 3x – 2 = 7, 10 – 2x = 6, 0.2x + 5 = 10 (& 15 more)
in
Intermediate/Advanced Algebra
Are you serious?! This is not a "we do homework" site. Is your teacher aware that you're doing this?
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2 replies | 84 view(s)
04-15-2018,
12:03 PM
Denis
replied to a thread
The mean of this sequence of five numbers: 2, N, N+2, 11, 14 is 7.8
in
Arithmetic
Hint: n(n+1)/2 In that sequence, n = 5 5(5 + 1) / 2 = 15
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4 replies | 218 view(s)
04-14-2018,
01:57 PM
Denis
replied to a thread
Basic algebra help please
in
Beginning Algebra
x = 3 + 5 + 9 x = ? 3 + 5 = 8 x = 8 + 9 x = 17 Get my drift? :p
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5 replies | 163 view(s)
04-14-2018,
12:40 PM
Denis
replied to a thread
Geometric sequences: how to systematically work them out using a method
in
Intermediate/Advanced Algebra
7 21 63 189 : sum = 280 a = 1st term = 7 r = ratio = 3 n = number of terms = 4 sum = a(r^n - 1) / (r - 1) = 280 HOKAY?
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9 replies | 274 view(s)
04-13-2018,
08:02 PM
Denis
replied to a thread
Geometric sequences: how to systematically work them out using a method
in
Intermediate/Advanced Algebra
Work what out? 2,6,18,54,162 is also a geometric sequence.
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9 replies | 274 view(s)
04-13-2018,
07:52 PM
Denis
replied to a thread
Denis Is Jealous
in
Math Odds & Ends
Her autograph, of course...
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6 replies | 113 view(s)
04-13-2018,
03:57 PM
Denis
replied to a thread
Stumped by a story problem: "A candy maker makes two sizes of candies...."
in
Beginning Algebra
Hint: S = 15 - L
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3 replies | 93 view(s)
04-13-2018,
02:12 PM
Denis
replied to a thread
I need an equation: I have the weights of two ingredients...
in
Beginning Algebra
Changing r and i to a and b, k and s to x and y. Problem rewritten this way: We have the weights of two ingredients: weight of ingredient 1 = a...
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5 replies | 177 view(s)
04-13-2018,
01:36 PM
Denis
replied to a thread
Denis Is Jealous
in
Math Odds & Ends
YAHOO! She said YES! And told me she had already turned Jomo down :p
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6 replies | 113 view(s)
04-12-2018,
07:30 PM
Denis
replied to a thread
Denis Is Jealous
in
Math Odds & Ends
Deal!!
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6 replies | 113 view(s)
04-12-2018,
05:57 PM
Denis
replied to a thread
SAT practice question: Rational equations (3^2 = a-1, so a=10)
in
Intermediate/Advanced Algebra
It did not turn into a ten: 9 = a-1
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5 replies | 105 view(s)
04-12-2018,
05:39 PM
Denis
started a thread
Denis Is Jealous
in
Math Odds & Ends
Sally sure earns a lotta money: got her phone number?
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6 replies | 113 view(s)
04-12-2018,
05:35 PM
Denis
replied to a thread
Is this one solvable?
in
Math Odds & Ends
Rpi = ?
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22 replies | 516 view(s)
04-12-2018,
03:33 PM
Denis
replied to a thread
Paying taxes in "proportion" to our separate incomes
in
Finance/Business Math
I miss my ex....but my aim is getting better :p
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5 replies | 190 view(s)
04-12-2018,
12:42 PM
Denis
replied to a thread
Electrical Equations Transpoition: solve Zs = Ze+((R1*C1)+(r2*c2)*L)/1000 for L, r2
in
Beginning Algebra
Change Zs to a, Ze to b, c2 to c, r2 to r and R1*C1 to d So equation becomes: a = b + (d + r*c*L) / 1000 Then: (d + r*c*L) / 1000 = a - b d +...
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6 replies | 190 view(s)
04-12-2018,
09:37 AM
Denis
replied to a thread
Is this one solvable?
in
Math Odds & Ends
Jomo, this thread will without fail make you the winner of the "2018 most confusing thread award" :p
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22 replies | 516 view(s)
04-11-2018,
04:53 PM
Denis
replied to a thread
Annuities & Perpetuities: X is thinking of acquiring a house to rent out indefinitely
in
Finance/Business Math
Are you saying that you calculated 16036 as the annual payment over 5 years to borrow 73440 at rate of 5% p.a.?
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2 replies | 170 view(s)
04-11-2018,
04:02 PM
Denis
replied to a thread
Electrical Equations Transpoition: solve Zs = Ze+((R1*C1)+(r2*c2)*L)/1000 for L, r2
in
Beginning Algebra
Bad bracketing! OK?
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6 replies | 190 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
16,976
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General Information
Last Activity
Today
12:51 PM
Join Date
02-17-2004
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