Register
Help
Remember Me?
What's New?
Forum
New Posts
FAQ
Calendar
Community
Member List
Forum Actions
Mark Forums Read
Quick Links
Today's Posts
View Site Leaders
Math Lessons by Subject
Calculators/Solvers
Advanced Search
Member List
Denis
If this is your first visit, be sure to check out the
FAQ
by clicking the link above. You may have to
register
before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.
Denis
Elite Member
Find latest posts
Find latest started threads
Mini Statistics
Join Date
02-17-2004
Last Activity
Today
10:12 PM
Tab Content
Denis's Activity
About Me
Tab Content
All
Denis
Photos
New Activity (
)
Please reload this page to view the 200+ new activity items that have been created.
Older Activity
Today,
07:25 PM
Denis
replied to a thread
Solve for x please -2e^-x = ??
in
Beginning Algebra
Make it equal to u: -2e^-x = u 1st step: -2/(e^x) = u Do you understand that?
see more
3 replies | 64 view(s)
Today,
04:20 PM
Denis
replied to a thread
a compound interest problem
in
Intermediate/Advanced Algebra
46,204.09 is CORRECT. Next, simply calculate FV of the 50,000: 50000(1+.06/12)^240 Add result to 46,204.09 and you're done. Make SURE you...
see more
3 replies | 48 view(s)
Yesterday,
07:52 PM
Denis
replied to a thread
how does the author get this answer
in
Intermediate/Advanced Algebra
Your "4 hours" should be 8 hours: author specified 4 times longer. 1 7/8 is correct. Good news: you'd be correct IF 4 hours :rolleyes:
see more
4 replies | 86 view(s)
Yesterday,
07:38 PM
Denis
replied to a thread
Rearrange to solve G/(x*F)=H for x
in
Intermediate/Advanced Algebra
Let u = x*F Then G/u = H u = G/H : get my drift?
see more
5 replies | 120 view(s)
Yesterday,
05:26 PM
Denis
replied to a poll
TI-84 plus help (factoring polynomials)
in
Calculator Questions
Jay, are you able to solve the equation 3x^2+16x+20 = 0 using the quadratic formula?
see more
21 replies | 280 view(s)
04-21-2018,
10:01 AM
Denis
replied to a thread
Formula needed to calculate amount that can be borrowed with max $400 payment
in
Finance/Business Math
Ever heard of "Present value of an annuity"? Anyhow, at 2.58 APR, borrow max. even if you don't need it :p
see more
2 replies | 162 view(s)
04-21-2018,
09:55 AM
Denis
replied to a thread
Formula needed: how to find percentage of interest paid from total amount pd ($4,500)
in
Finance/Business Math
Hint: if you borrow $B and pay back total of $P to pay it off, what does P - B represent? Get it?
see more
2 replies | 63 view(s)
04-20-2018,
06:20 PM
Denis
replied to a thread
Solving thru combination: If 6a+6b=30 and 3a+2b=14 what is value of b?
in
Intermediate/Advanced Algebra
Ah so!!:lol:
see more
10 replies | 262 view(s)
04-20-2018,
01:50 PM
Denis
replied to a thread
Please help! What is the correct way to write 103 in factored form?
in
Arithmetic
https://www.google.ca/search?source=hp&ei=ESjaWo7nPIXjjwSzyof4BA&q=103+in+factored+form&oq=103+in+factore&gs_l=psy-ab.1.1.33i160k1l2.2083.14056.0.1826...
see more
3 replies | 92 view(s)
04-19-2018,
10:38 PM
Denis
replied to a thread
Denis Is Jealous
in
Math Odds & Ends
Too bad so sad, suckah!
see more
11 replies | 356 view(s)
04-19-2018,
08:02 PM
Denis
replied to a thread
Solving thru combination: If 6a+6b=30 and 3a+2b=14 what is value of b?
in
Intermediate/Advanced Algebra
Divide 1st equation by 6: a + b = 5 So a = 5 - b Substitute in 2nd equation: 3(5 - b) + 2b = 14 Solve that and you're finished!
see more
10 replies | 262 view(s)
04-18-2018,
10:20 PM
Denis
replied to a thread
Quadratic simultaneous equations: X squared * Y squared =5, Y-X=3
in
Beginning Algebra
Jomo oh Jomo yo my zero, whoops hero !!
see more
11 replies | 302 view(s)
04-18-2018,
06:59 PM
Denis
replied to a thread
Quadratic simultaneous equations: X squared * Y squared =5, Y-X=3
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
see more
11 replies | 302 view(s)
04-18-2018,
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
see more
7 replies | 160 view(s)
04-18-2018,
12:13 PM
Denis
replied to a thread
Quadratic simultaneous equations: X squared * Y squared =5, Y-X=3
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...
see more
11 replies | 302 view(s)
04-18-2018,
12:00 PM
Denis
replied to a thread
Find for X for m(RXM)=x+81, m(RXT)=2x+32 (Geometry Question)
in
Beginning Algebra
http://mathonweb.com/help_ebook/html/equations_1.htm
see more
6 replies | 153 view(s)
04-18-2018,
09:53 AM
Denis
replied to a thread
Find for X for m(RXM)=x+81, m(RXT)=2x+32 (Geometry Question)
in
Beginning Algebra
VERY good idea :rolleyes:
see more
6 replies | 153 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):...
see more
3 replies | 131 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...
see more
4 replies | 174 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:
see more
5 replies | 396 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...
see more
5 replies | 396 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:
see more
5 replies | 158 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...
see more
3 replies | 134 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?
see more
2 replies | 102 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
see more
4 replies | 303 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
see more
5 replies | 180 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?
see more
9 replies | 304 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.
see more
9 replies | 304 view(s)
04-13-2018,
07:52 PM
Denis
replied to a thread
Denis Is Jealous
in
Math Odds & Ends
Her autograph, of course...
see more
11 replies | 356 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
see more
3 replies | 116 view(s)
More Activity
No More Results
No Recent Activity
About Denis
Basic Information
About Denis
Location:
Ottawa, Ontario
Interests:
puzzles
Occupation:
retired
Signature
I'm just an imagination of your figment !
Statistics
Total Posts
Total Posts
16,987
Posts Per Day
3.28
General Information
Last Activity
Today
10:12 PM
Join Date
02-17-2004
Referrals
4