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  1. Replies
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    167

    Jomo oh Jomo yo my zero, whoops hero !!

    Jomo oh Jomo yo my zero, whoops hero !!
  2. Replies
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    167

    Ya made zee typo Halls... aNUTter way: x^2...

    Ya made zee typo Halls...

    aNUTter way:

    x^2 + y^2 = 5 [1]
    y - x = 3 [2]

    [2]^2 : x^2 - 2xy + y^2 = 9 [3]

    Subtract [1] from [3] : xy = -2
  3. WHY do you say it's "wrong"? Havva look:...

    WHY do you say it's "wrong"?
    Havva look:
    http://www.wolframalpha.com/input/?i=log(10)%5E5%2Flog(10)%5E2%3Dlog(10)%5Ex
  4. Replies
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    Did you make that up? If not, is it the original...

    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 per Jomo's post), you'll end up
    with a 4th...
  5. http://mathonweb.com/help_ebook/html/equations_1.h...

    http://mathonweb.com/help_ebook/html/equations_1.htm
  6. VERY good idea :rolleyes:

    VERY good idea :rolleyes:
  7. Replies
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    Yer correct Doc: should be the parallel sides. ...

    Yer correct Doc: should be the parallel sides.

    He made same goof here (but corrected it):
    http://mathhelpforum.com/geometry/280461-triangle-trapeze-problem-pls-help.html
  8. 1st one looks like: B = A - 3 A = B/2 + 6 No...

    1st one looks like:
    B = A - 3
    A = B/2 + 6

    No idea about the 2nd; seems that number 1201 is involved...
  9. Betya a Canuk Toonie answer is 921.375:rolleyes:

    Betya a Canuk Toonie answer is 921.375:rolleyes:
  10. 1950*.081/360*30 would be the monthly payment (if...

    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 a lot in class and I can't find my notes for this"...
  11. Agree...but this one is "close": 11 / 14 =...

    Agree...but this one is "close":
    11 / 14 = .7857142....
    pi * 14 / 56 = .7853981....

    Just another "badly written problem":confused:
  12. A simple diagram = 1000 words! p = plane...

    A simple diagram = 1000 words!

    p = plane speed, w = wind speed

    (@p-w)..............876...............>2 hr : clearly p-w = 876/2

    1.5 hr<..............876..............(@p+w) : clearly p+w =...
  13. Hint: n(n+1)/2 In that sequence, n = 5 5(5 + 1)...

    Hint: n(n+1)/2
    In that sequence, n = 5
    5(5 + 1) / 2 = 15
  14. Replies
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    x = 3 + 5 + 9 x = ? 3 + 5 = 8 x = 8 + 9 x =...

    x = 3 + 5 + 9
    x = ?

    3 + 5 = 8
    x = 8 + 9
    x = 17

    Get my drift? :p
  15. 7 21 63 189 : sum = 280 a = 1st term = 7 r =...

    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?
  16. Work what out? 2,6,18,54,162 is also a...

    Work what out?

    2,6,18,54,162 is also a geometric sequence.
  17. Hint: S = 15 - L

    Hint: S = 15 - L
  18. Changing r and i to a and b, k and s to x and y....

    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 grams and weight of ingredient 2 = b grams.
    ...
  19. Thread: Denis Is Jealous

    by Denis
    Replies
    6
    Views
    113

    Deal!!

    Deal!!
  20. It did not turn into a ten: 9 = a-1

    It did not turn into a ten:
    9 = a-1
  21. Thread: Denis Is Jealous

    by Denis
    Replies
    6
    Views
    113

    Denis Is Jealous

    Sally sure earns a lotta money: got her phone number?
  22. Replies
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    516

    Rpi = ?

    Rpi = ?
  23. I miss my ex....but my aim is getting better :p

    I miss my ex....but my aim is getting better :p
  24. Change Zs to a, Ze to b, c2 to c, r2 to r and...

    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 + r*c*L = 1000a - 1000b

    Take over: solve for L,...
  25. Replies
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    Jomo, this thread will without fail make you the...

    Jomo, this thread will without fail make you the winner of the
    "2018 most confusing thread award" :p
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